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Here’s how to hydrate for better performance.Here’s how to hydrate for better performance.Staying hydrated seems simple enough—drink water when you’re thirsty and stop when you feel like you’re done, right? Well, it’s a bit more complicated than that, especially for runners. 

That’s because not understanding the complicated equation of race distance and intensity combined with water and electrolyte intake can ruin a long run or race, not to mention have serious health repercussions. Drink too little and your ability to power through your workout suffers; drink too much and you can get sidelined by nausea and frequent pee breaks. 

And even though you might first worry about dehydration for those summer runs, researchers found that the newer you are to running and the slower you run, the more likely it is that you will drink too much water while racing. (We’ll talk more about this later.)

To that end, much of the research demonstrates that mastering the art of hydration when you run isn’t as simple as it seems. Keep reading to find out if you drink water the wrong way—and how to drink water right.

6 Ways You Drink Water Wrong and 6 Ways to Drink Water Right

❌ Wrong Way: Gulping water during a race

✅ Right Way: Sip as you run

It’s okay to slow a little to make sure you’re getting in your fluids during a race, but gulping water at each aid station can ultimately slow you down and also lead to an upset stomach.

That’s because drinking too much water too quickly overloads the stomach, causing it to rapidly stretch. This can lead to discomfort and potential nausea, Justin Mullner, M.D., a board-certified primary care sports physician with the Orlando Health Jewett Orthopedic Institute in Florida tells Runner’s World.

Take small sips of water (or electrolyte drink) every 15 to 20 minutes, depending on the temperature and intensity of the run.

Combining a run with too much water is even more likely to cause nausea. That’s because intense exercise directs blood flow away from the stomach and toward the muscles, causing digestion to slow down. “So you put a bunch of water in there and the stomach really can’t handle it effectively and efficiently,” Mullner says.

A better strategy is to take small sips of water (or electrolyte drink) every 15 to 20 minutes, depending on the temperature and intensity of the run. “This approach helps maintain a steady level of hydration and prevents the stomach from becoming overly full,” Meghan Kennihan, a RRCA- and USATF-certified running coach, tells Runner’s World.

❌ Wrong Way: Drinking from a dirty water bottle✅ Right Way: Regularly clean your bottle

Your trusty water bottle is always there when you need it. Sadly, constant use means you’re probably getting more than water. Unless you regularly clean your water bottle—which means daily according to Mullner—you could be getting a dose of bacteria or even mold.

Every time you put your mouth to the water bottle and use your hands to open and close it, you transfer bacteria that can make its way inside. The moist environment inside your water bottle provides an optimal breeding ground for bacteria and mold, especially if you live in hot, humid areas. If left unchecked, the bacteria and mold can continue growing, potentially causing you to experience symptoms similar to food poisoning (such as stomach pain or cramps, diarrhea, and vomiting), per the Centers for Disease Control and Prevention. People with mold sensitivities can have a flare-up of allergy symptoms.Ideally, you’d wash out your reusable bottle—whether plastic, stainless steel, or glass—with soap and warm water each time, Mullner says. “It’s even more important if you’re using the bottle every single day or drinking beverages other than water,” he says. Mixing electrolyte powders or adding a sports drink to your bottle, for example, means more material for bacteria.Signs your bottle could use a good scrubbing include visible residue, a funny or foul odor, or changes in how things taste, Mullner says.

❌ Wrong Way: Waiting too long to hydrate before a run or race✅ Right Way: Start early

When preparing for a long run or race, many runners forget to hydrate until they’re practically toeing the starting line, “which is a bad idea because it doesn’t give the body enough time to absorb and utilize the fluids,” Kennihan says.

Staying well-hydrated in the days leading up to your long run or race can help you perform well, avoid feeling overly full, and reduce restroom stops. Be especially diligent about drinking water starting the day before a long run or race, and check your urine color to be sure you’re getting enough. “Really dark yellow is a sign that you’re not well-hydrated,” Mullner says. “Ideally, it has a slight tinge of yellow.”

Drink 16 to 20 ounces of water about 2 to 3 hours beforehand and then another 8 to 10 ounces 20 to 30 minutes before running.

Individual fluid needs vary. However, a general guideline for the day of the event is to drink 16 to 20 ounces of water about 2 to 3 hours beforehand and then another 8 to 10 ounces 20 to 30 minutes before running, Kennihan says. You may need to adjust your intake according to your body size, run distance, and outside temperature.

❌ Wrong Way: Drinking too much water on long runs✅ Right Way: Balance electrolyte intake with water

It’s critical to drink enough water during long training runs and races. However, drinking lots of water, and only water, can lead to overhydration, meaning you have too much water in your body.

Hyponatremia is an extreme version of overhydration, and occurs when sodium levels in the blood are lower than recommended, leading to muscle cramps, headaches, nausea and vomiting, low energy, and confusion, per the Cleveland Clinic. Normally, your body keeps your electrolytes in balance by taking the minerals from the foods you eat and filtering the excess through your urine. However, intense exercise causes electrolytes (particularly sodium) to be quickly lost through sweat, and hot, humid temperatures only accelerate this loss, per the American College of Sports Medicine. 

It's not just new runners who tend to overhydrate. At the other end of the spectrum, 41 out of 63 finishers at an ultramarathon also finished with mild or severe hyponatremia, according to a 2019 Frontiers in Nutrition study.

Take in electrolytes in addition to water if you’re running for longer than 60 minutes or in hot, humid temperatures. Drinking water without replacing electrolytes dilutes the remaining electrolytes (again, sodium in particular) in your blood. “You can potentially get yourself into trouble with hyponatremia,” Mullner says.

To prevent an electrolyte imbalance, take in electrolytes in addition to water if you’re running for longer than 60 minutes or in hot, humid temperatures. Bring an electrolyte drink, some gels, or another electrolyte supplement.

❌ Wrong Way: Drinking a pure sports drink✅ Right Way: Water it down

Sports drinks offer a convenient delivery system for carbs and electrolytes while running. Still, many runners prefer to water things down.

“Many sports drinks are too concentrated, leading to stomach cramps and nausea. Diluting them can still provide the necessary electrolytes and carbohydrates without overwhelming the stomach,” Kennihan notes.

The optimal ratio of sports drink to water depends on your preferences and the makeup of your drink. Mullner suggests diluting your sports drink to the point where it’s most palatable for you.

Diluting sports drinks can still provide the necessary electrolytes and carbohydrates without overwhelming the stomach.

The exception: Don’t dilute a sports drink that contains carbohydrates if you’re using it for energy purposes. “Some sports drinks have carbs in there to help extend the amount of time you can perform, and if you’re trying to absorb carbs better, you would have it with some electrolytes,” Mullner says. Adding water can cut down on how many carbs you get per sip, limiting performance benefits.❌ Wrong Way: You don‘t know about your med’s side effects

✅ Right Way: You read labels and talk to your pharmacist

Some over-the-counter and prescription medications can affect an athlete’s hydration, says Kennihan. NSAIDs, such as ibuprofen and aspirin, can reduce blood flow to the kidneys, which can impair their ability to conserve water and electrolytes, potentially leading to dehydration, especially during prolonged physical activity like running. 

Similarly, diuretics, which are prescribed for conditions such as hypertension and edema, increase urine production and promote the excretion of water and electrolytes from the body. Increased urine output can lead to a significant loss of fluids and electrolytes, making it easier for runners to become dehydrated, particularly in hot and humid conditions or during long-distance runs. 

Likewise, antihistamines can reduce saliva production and increase the risk of dry mouth and dehydration, while laxatives can cause increased bowel movements and fluid loss.Lastly, stimulant medications, such as those used for attention deficit hyperactivity disorder (ADHD), can increase sweating and fluid loss, potentially leading to dehydration if fluid intake is not adequately maintained.

Bottom line: As a runner, remember that hydration is as much a part of your performance as actual time on your feet. 

The authors of a 2019 article published in the International Journal of Sport Nutrition and Exercise Metabolism recommended that runners develop a “personalized and practiced race plan” to optimize their fluid and carbohydrate intake based not only on their distance and intensity, but also taking into account their body composition, as well as the weather and other race conditions, such as refueling stations, at each event.

The prospect of seeing one of athletics' biggest stars back on the track is growing stronger, with Jakob Ingebrigtsen reportedly targeting a return to competition later this summer following his recovery from Achilles tendon surgery.

According to comments made by his agent, Daniel Wessfeldt, in an interview with Norwegian media, the double Olympic champion could make his long-awaited comeback at one of three major European meetings in July. The leading options under consideration are the Monaco Diamond League on July 10, the Hungarian Athletics Grand Prix on July 14, and the London Diamond League on July 18.

For athletics fans, the possibility of Ingebrigtsen lining up in London would add another layer of excitement to an already highly anticipated Diamond League meeting. The Norwegian middle-distance sensation has become one of the sport's most dominant figures in recent years, collecting Olympic, world and European titles while consistently rewriting record books.

His 2026 campaign was put on hold after he underwent surgery on his Achilles tendon earlier this year, forcing him to focus on rehabilitation rather than competition. Since then, questions have surrounded when the 24-year-old would be ready to return to racing.

The latest update suggests that decision will largely depend on how his training progresses over the coming weeks. If recovery continues according to plan, July could mark the beginning of his return to elite competition ahead of the latter stages of the season.

A comeback at either Monaco, Budapest or London would immediately place Ingebrigtsen back among the sport's biggest storylines. Each meeting is renowned for producing world-class performances, and any appearance by the Norwegian would attract significant attention from fans eager to see how quickly he can regain top form after his injury setback.

While no final decision has been confirmed, the signs are increasingly positive. After months away from competition, Jakob Ingebrigtsen appears to be edging closer to a return, with London's Diamond League meeting emerging as one of the most intriguing possibilities on his road back to the track.

Should his recovery continue smoothly, athletics could soon welcome back one of its brightest and most influential stars.

What should have been the defining moment of Emad Bashir-Mohammed's young running career instead turned into one of the most talked-about controversies in American road racing this year.

The 23-year-old crossed the finish line first in the men's citizen's race at the prestigious Bolder Boulder 10K on Memorial Day in Colorado, stopping the clock at an impressive 29:50. His performance was not only a commanding victory but also one of the fastest winning times ever recorded in the event's long and celebrated history. Bashir-Mohammed finished eight seconds clear of his nearest challenger and appeared to have secured a breakthrough triumph.

For nearly two hours, he was the undisputed winner.

Then everything changed.

Race officials announced that Bashir-Mohammed had been disqualified after determining that he had started in the wrong wave. According to Bolder Boulder regulations, he had been assigned to the AA wave but lined up with the faster A wave, which began earlier. Event rules allow runners to move backward into a slower wave, but prohibit athletes from advancing into a faster one.

As a result, Bashir-Mohammed's victory was erased from the record books.

The citizen's title was subsequently awarded to Nickolas Scudder, who crossed the line second in 29:58. The promotion handed Scudder back-to-back citizen's race victories, while Bashir-Mohammed was left to grapple with the disappointment of losing a win he believed he had earned on the road.

The disqualification has since ignited widespread debate across the running community.

Bashir-Mohammed maintains that he did not intentionally violate the rules. He claims that after collecting his AA bib, he spoke with race personnel and was permitted to start with the A wave after presenting evidence of his recent performances. In a statement shared after the race, he expressed frustration over the decision, arguing that his goal was simply to compete against the strongest field available and produce the fastest time possible.

Race organizers, however, stood firmly behind their ruling. Officials stated that wave-assignment regulations are clearly communicated in pre-race information and reiterated during packet collection. They also noted that hundreds of participants are disqualified each year for moving into faster start groups, emphasizing that consistent enforcement is necessary to maintain fairness for all competitors.

The incident has divided opinion among runners and fans alike. Some believe the rules must be applied equally regardless of an athlete's finishing position, arguing that wave assignments are a fundamental part of race organization. Others feel the punishment is harsh, particularly if Bashir-Mohammed genuinely received approval to move up before the start.

What remains undisputed is the quality of his performance. On the roads of Boulder, Bashir-Mohammed demonstrated the fitness and speed required to outrun the field by a significant margin. Yet in road racing, crossing the finish line first is only part of the equation. Compliance with race regulations carries equal weight.

For Bashir-Mohammed, the day will be remembered as a painful lesson in the fine margins that can define elite competition. A remarkable run delivered a memorable victory, but a dispute over wave placement ultimately overshadowed the achievement, leaving behind a controversy that continues to fuel discussion throughout the running world.

A fast race, a costly administrative error, and a debate that may linger long after the finish-line tape has been packed away.

The men's 100 metres at the 2026 Rome Diamond League is shaping up to be one of the most anticipated sprint races of the season, with an exceptional field featuring some of the fastest men in the world.

Scheduled for Thursday, June 4, at the iconic Stadio Olimpico in Rome, the race will bring together reigning stars, established champions and emerging talents in a contest that promises fireworks from the moment the gun goes off.

Kenya's Ferdinand Omanyala headlines a world-class lineup that includes American sprint sensation Noah Lyles, Botswana's Olympic champion Letsile Tebogo, Jamaica's explosive Ackeem Blake, South Africa's ever-consistent Akani Simbine and Italy's hometown hero Lamont Marcell Jacobs. With personal bests ranging from 9.77 to 9.97 seconds, the field is packed with athletes capable of producing something special on the Diamond League stage.

Omanyala, the African record holder with a blistering personal best of 9.77 seconds, arrives in Rome eager to continue his strong early-season form and prove he can challenge the very best on the global circuit. The Kenyan star has built a reputation as one of the fastest starters in world sprinting and will be looking to make a statement against an elite field.

Standing in his way is world champion Noah Lyles, whose personal best of 9.79 seconds places him among the fastest athletes in history. The American remains one of the sport's biggest attractions and will be determined to add another Diamond League victory to his impressive résumé.

The race also marks a major test for Olympic champion Letsile Tebogo. The Botswanan star has rapidly become one of athletics' most exciting talents, while Ackeem Blake continues to establish himself as a serious contender on the international sprint scene.

Adding further intrigue is the presence of Italy's Lamont Marcell Jacobs. Competing on home soil, the Tokyo Olympic champion will enjoy passionate local support as he seeks to deliver a memorable performance in front of the Roman crowd.

South Africa's Akani Simbine, Cameroon's Emmanuel Eseme, Great Britain's Jeremiah Azu and rising American talent Jordan Anthony complete a field that boasts remarkable depth and quality.

Men's 100m Entry List – Rome Diamond League 2026

Ferdinand Omanyala (Kenya) – PB: 9.77

Noah Lyles (USA) – PB: 9.79

Lamont Marcell Jacobs (Italy) – PB: 9.80

Akani Simbine (South Africa) – PB: 9.82

Letsile Tebogo (Botswana) – PB: 9.86

Ackeem Blake (Jamaica) – PB: 9.88

Jordan Anthony (USA) – PB: 9.91

Emmanuel Eseme (Cameroon) – PB: 9.96

Jeremiah Azu (Great Britain) – PB: 9.97

With multiple national record holders, global champions and Olympic medal contenders sharing the same start line, the Rome Diamond League men's 100m could deliver one of the fastest races of the year. For sprint fans around the world, all eyes will be on Rome as a stellar cast battles for supremacy over athletics' blue-riband distance.

Audrey Werro announced her arrival as one of the early stars of the 2026 outdoor season with a commanding victory in the women’s 800 metres at the Rabat Diamond League, producing a performance that exceeded even her own expectations.

The Swiss middle-distance talent surged to victory in a brilliant 1:56.56, breaking the meeting record and delivering one of the fastest times recorded worldwide this season. In a race packed with quality, Werro displayed exceptional composure, confidence, and finishing strength to separate herself from the field and stamp her authority on the event.

What made the performance even more remarkable was the athlete's surprise at the level she had already reached so early in the campaign.

"I was not expecting such a strong start to the season," Werro admitted after the race.

The race unfolded at a relentless pace, but Werro remained perfectly positioned throughout. As the athletes approached the bell lap, she glanced at the clock and immediately sensed something special was within reach.

"When I saw the time at the bell, I felt really confident," she said. "I'm really happy with the Meeting Record and looking forward to the rest of the season."

Her confidence proved justified. Maintaining her rhythm over the final 400 metres, Werro powered down the home straight to secure the victory and rewrite the Rabat meeting record books in the process.

The performance sends an early warning to her rivals ahead of a season that promises major championships and high-profile Diamond League battles. Beyond the record-breaking time, Werro's display highlighted her growing maturity as a racer, combining tactical awareness with impressive speed and endurance.

With the outdoor season only beginning, the 1:56.56 clocking suggests that even faster times could be on the horizon. If Rabat is any indication, Audrey Werro may be poised for the biggest season of her career.

Her emphatic victory in Morocco was more than just another Diamond League win—it was a statement of intent from an athlete determined to challenge the world's best throughout 2026.

The city of Boston is set to welcome back one of its most celebrated champions as Kenya’s Sharon Lokedi headlines a world-class field for the 2026 B.A.A. 10K presented by Mass General Brigham Cancer Institute on June 21.

Fresh from another remarkable victory at the Boston Marathon in April, Lokedi returns to the streets of Boston and Cambridge carrying both momentum and confidence as she aims to defend the title she captured in dominant fashion last year.

The two-time Boston Marathon champion has developed a special connection with the historic race city. In 2025, she produced a course-record performance of 2:17:22 to win the Boston Marathon before returning this year to claim another victory in 2:18:51, the second-fastest winning time in the event’s storied history. Her success has cemented her status as one of the premier road runners in the world.

Lokedi will be making her first competitive appearance since her marathon triumph and arrives as the reigning B.A.A. 10K champion after clocking 31:39 over the challenging 6.2-mile course in 2025.

“Boston has become a very special place for me,” Lokedi said ahead of the race. “The atmosphere created by the fans and the community is unlike anywhere else. I’m excited to return and give everything I have to defend my title.”

The women’s race promises to be highly competitive. American Olympian Rachel Smith, who finished second at the Boston 5K in April, leads the domestic challenge. Kenya’s strong contingent includes African 10,000m champion Gladys Kwamboka, former B.A.A. 10K runner-up Stacy Ndiwa, and experienced road racer Viola Cheptoo. British Olympian Jessica Warner-Judd adds further international depth to a field packed with proven performers.

The men’s race is equally impressive, featuring elite athletes from 13 nations.

Ethiopia’s Dawit Seare enters as one of the leading contenders after capturing the 2025 Boston 5K title and bringing the fastest 10K personal best in the field at 27:21. Kenya will be represented by an accomplished group led by Alexander Mutiso, winner of the 2024 London Marathon and runner-up at last year’s New York City Marathon.

Patrick Kiprop also arrives in outstanding form after securing victory at the prestigious BolderBoulder 10K on Memorial Day, while Alex Masai returns looking to continue his strong record in Boston. Masai recently finished ninth at the Boston Marathon and has earned three top-ten finishes at the B.A.A. 10K.

Among the international stars making their mark is South Africa’s Adriaan Wildschutt, who makes his race debut after an impressive season highlighted by victory at the NYC Half Marathon in 59:30. Ethiopia’s Olympic bronze medallist Hagos Gebrhiwet adds further quality to the field, bringing a wealth of championship experience and previous success in Boston.

Canadian national 10K champion Andrew Alexander, two-time U.S. Olympian Hillary Bor, marathon standout Ryan Ford, and reigning USA 25K champion Andrew Colley complete a field stacked with talent and depth.

With defending champions, Olympic finalists, national champions and rising stars all converging on Boston, the 2026 B.A.A. 10K is shaping up to be one of the most competitive editions in recent memory. For Sharon Lokedi, however, the mission is simple: return to the city where she has repeatedly excelled and add another memorable chapter to her growing Boston legacy.