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Over the past decade, training for the heat has gone from a nice-to-have to an absolute necessity for top runners. Professor Chris Minson is attempting to perfect the science.

After a few pleasant hours sitting in the sun watching the Prefontaine Classic in Eugene, Oregon last month, I headed down into the bowels of Hayward Field for a grueling test for running in the heat. Chris Minson, a professor of human physiology at the University of Oregon, had invited me to try the heat adaptation protocol he has developed for elite athletes from the university and from local pro teams like the Bowerman Track Club. I’ve written about Minson’s research several times, so experiencing the protocol first-hand seemed like a good idea… at the time.

Heat is a big deal in sports these days, and it’s only getting bigger. In recent years we’ve had major events like the world track and field championships in insanely hot places, like Qatar, where the marathons had to be started at midnight. But summertime in Eugene (where the Olympic Track Trials will take place later this month) and Paris (where the Olympics will be held) can also be sizzling. Over the past decade, heat preparation has gone from a nice-to-have to an absolute necessity for top athletes. The details of how to prepare remain more art than science, though, so I was interested to see how Minson put theory into practice.

Back in the 1920s and 1930s, scientists developed the first heat adaptation protocols for workers in South Africa’s sweltering gold mines. The gold standard for heat adaptation evolved from that work: spend at least an hour a day exercising in hot conditions, and after 10 to 14 days you’ll see a bunch of physiological changes. Your core temperature will be lower, your blood volume will be higher, you’ll begin sweating and dilating your blood vessels at a lower temperature threshold, you’ll sweat more, and so on. Put it all together and you’ll be able to stay cooler and run faster in hot conditions.

In fact, there’s even evidence that this type of heat adaptation can make you faster in moderate weather, perhaps as a result of the extra blood plasma. In the lead-up to the 2008 Olympics, Minson was working with American marathoner Dathan Ritzenhein, helping him prepare for the expected hot conditions in Beijing. But he started to worry about what would happen if it wasn’t hot: would all the heat training actually make Ritzenhein slower? Minson and his colleagues ran a study to find out; the results, which they published in 2010, suggested that heat adaptation helps even in cool conditions. That’s the study that really kicked interest in heat training into higher gear.

The problem with the classic approach, though, is that training for an hour in hot, muggy conditions is exhausting. If you’re trying to do a hard workout, you won’t be able to hit the splits you want. If you’re trying to do an easy run, it’s going to take more out of you than it usually does, potentially compromising your next hard workout or raising your risk of overtraining. So how do you get the benefits of heat adaptation without tanking the rest of your training plan?

Minson’s Exercise & Environmental Physiology Lab at the University of Oregon, which he co-runs with fellow physiologist John Halliwill, is located in the Bowerman Sports Science Center, a state-of-the-art facility located under the northwest grandstand of Hayward Field. The key piece of equipment, for my purposes, is an environmental chamber that can take you down to 0 degrees Fahrenheit or up to 22,000 feet of simulated altitude, deliver simulated solar radiation, or blast you with wind. For my heat run, Minson set the dials to 100 degrees Fahrenheit and 40 percent humidity.

Earlier that day, Minson had given me a thermometer pill to swallow, which would enable him to wirelessly track my core temperature as the run progressed. “I’ll need that back,” he warned me, poker-faced. Fortunately, he was joking.

Before I entered the chamber, I peed in a cup so that Minson could check my urine-specific gravity, the ratio of how dense your urine is compared to water. I clocked in at 1.025, marginally above Minson’s threshold of 1.024 for mild dehydration. I blame it on having spent a few hours sitting in the sun watching the track meet. Then he checked my weight, so that he’d be able to figure out how much I sweated during the test.

When I stepped into the chamber, wearing nothing but shorts and running shoes, I could feel the blast of heat, but it wasn’t too oppressive—like a really hot day at the beach but under an umbrella. I started with a five-minute warm-up at a slow pace, gradually ramping up until I hit 7:30 mile pace. Then the formal protocol started: 30 minutes at that pace.

The pace was self-chosen; Minson refused to tell me the pace I “should” run. The goal was to settle in at an effort that I could comfortably maintain for half-an-hour, and that would get me hot enough to trigger adaptations—a core temperature of about 101 degrees Fahrenheit is thought to be about right—without overshooting and roasting myself. Most of the elite runners he works with end up choosing paces between 7:00 and 8:00 per mile. I slotted myself in the middle of that range—which, let’s be honest, was a dumb thing to do for an aging non-elite runner.

Still, the running itself felt easy to me. Every five minutes or so, Minson had me rate my perceived effort on the Borg scale, which runs from 6 to 20, and also rate how hot I felt. For this, he used his own 0 to 10 thermal scale.

I started out at the effort of 10 (“very light”) and thermal sensation of 3 (“warm”). After 15 minutes, my effort had crept up to 12 (“somewhat hard”), but my thermal sensation was still 3. By this point I was sweating up a storm, watching with interest as my splatters of sweat made a distinctly asymmetric pattern on the treadmill’s control panel. (Clearly I needed to visit the biomechanics lab down the hallway to sort out my stride asymmetries.)

In the latter part of the test, my sweat rate seemed to drop—not a great sign, since it could signal dehydration. My effort topped out at 13, but my thermal sensation crept up to 4 (“very warm”), then 5 (“slightly hot”), then 6 (“somewhat hot”). I still felt under control, though. Then the test ended, and Minson ushered me off the treadmill, into the next room, and into the hot tub, where he asked me to submerge myself up to my neck. The water was set to 104 degrees Fahrenheit, and it was awful. My thermal sensation immediately spiked up to 8 (“very hot”) and then 9 (“miserably hot”).

The odd thing is that the water was basically the same temperature as I was. My core temperature had crept up to 103.2 degrees towards the end of the run, and hit 103.7 shortly afterward. The water wasn’t warming me up in any significant way, but it was robbing me of the superficial perception of coolness that I got from air currents and the evaporation of sweat. It’s a good reminder of why cooling techniques like ice towels or simply dumping water on your head can be valuable: they can dramatically change your perception of how hot you are.

Sitting in that hot tub wasn’t fun, but it’s a key tool for Minson in his efforts to help athletes adapt to heat without interfering with their normal training. It extends the period of thermal stress without trashing their legs. A half-hour easy run, even in hot conditions, isn’t that draining for a well-trained athlete. At least, it’s not supposed to be.

After I’d had a cold shower and chugged a few bottles of sports drink, Minson went over the results with me. The good news is that I hadn’t seemed very bothered by the heat. I’d sweated out 2.2 pounds of fluid, indicating a fairly high sweat rate of around 2 liters per hour. That suggests that I should already be reasonably well equipped to race in warm conditions.

The bad news, though, was that my numbers didn’t make sense. There are no “wrong” answers on a subjective scale, but mine were puzzling. As the test proceeded and my core temperature drifted over 100 degrees, I kept claiming that I felt merely 3-out-of-10 “warm.” That might mean that I’m immune to heat—but more likely, it suggests that I wasn’t properly attuned to my body’s condition. If you’re running in the heat but you’re totally oblivious to how hot you’re getting, that can be a recipe for disaster.

In fact, my subjective numbers were strikingly similar to those of an elite runner Minson has worked with—one who has struggled in the heat. Minson helped the athlete renormalize his heat perception, so that conditions he originally labeled as 3 out of 10 became a more realistic 5 or 6 out of 10.

The ability to accurately gauge how hot you are is important even in training, because those core temperature pills are about $70 a pop. Once athletes have a sense of how hot they should feel during heat adaptation runs, Minson has them judge their half-hour efforts by feel. If they start getting too hot—above 7 on the Minson Scale—they can turn a fan on in the heat chamber to avoid overheating. There’s no rigid schedule of when they do these heat runs: they fit them in around their other training and racing and travel plans.

In practice, of course, most of us don’t have access to a high-tech heat chamber and temperature-controlled hot tub. But studies in recent years have shown that you can use a variety of approaches to get your core temperature up: hot baths, saunas (Minson has one in his lab, and another in his backyard), overdressing during runs. The big-picture takeaway from Minson’s approach is that you can find ways of getting a heat stimulus without disrupting the rest of your training.

To do that, though, you need to be able to gauge when you’re getting overcooked. When I got back to my hotel room that afternoon, I realized that I was feeling wrung out, as if I’d done a long, hard workout rather than a half-hour jog. I’d missed the mark. I decided to take the next day off, and dreamed that night of Minson’s other recent research focus: ice baths.

Jakob Ingebrigtsen brought his remarkable 2026 season to a fitting close on home soil, winning the men’s street 1500m at the inaugural Runfest Norway in Sandnes on Friday.

Competing in front of an enthusiastic hometown crowd, the Olympic and world champion took control of the race from the early stages and maintained his authority through the finish, stopping the clock at 3:40.7.

Andreas Fjeld Halvorsen followed in second in 3:43.3, while Sigurd Tveit completed the podium in 3:47.8.

The unusual street race added another dimension to the occasion, with 273 runners taking part on the same road and sharing the course with one of Norway’s most accomplished distance runners. For the recreational participants, it offered a rare opportunity to compete alongside Ingebrigtsen in an event that brought elite athletics and mass participation together.

The victory also provided a fitting final chapter to a season that began with significant uncertainty for Ingebrigtsen. After undergoing major Achilles surgery in February, the Norwegian was forced to miss a substantial portion of the summer campaign as he worked his way back to full fitness.

His return, however, quickly developed into another championship-winning chapter. In Birmingham, Ingebrigtsen captured European 5,000m gold before adding another major title at the inaugural World Athletics Ultimate Championship in Budapest, where he won the 5,000m.

Those performances transformed what could have been a disrupted season into another year defined by championship success and a determined return to the highest level.

Now, with the Sandnes victory added to his 2026 record, Ingebrigtsen closes the year exactly where it began in spirit — overcoming adversity, rebuilding his form and once again competing at the front.

From Achilles surgery in February to major championship victories and finally a 1500m win before his hometown crowd, the Norwegian has given his 2026 season a memorable final scene.

Olympic 100m hurdles champion Masai Russell has announced her engagement to longtime partner Robert “Robbie” Springfield, adding a major personal milestone to the remarkable journey of one of America’s leading track and field stars.

Russell shared the news with her followers, revealing that Springfield had proposed and that she had accepted. Reflecting on their relationship, the Olympic champion described him as her best friend and expressed her excitement about spending the rest of her life with him.

The couple’s relationship dates back to their college years at the University of Kentucky, where both were student-athletes and competed in track and field. Russell established herself as a standout hurdler, while Springfield competed in the long jump, giving them a shared understanding of the demands, sacrifices and pressures that come with pursuing success in athletics.

Springfield has since transitioned from competition into coaching. A former collegiate long jumper, he is now part of the coaching staff at Morehead State University, where he works with the programme’s sprinters and jumpers.

Their relationship has developed alongside Russell’s rise to the top of the sport. The defining moment of her career came at the Paris 2024 Olympic Games, where she captured gold in the women’s 100m hurdles, securing her place among the sport’s Olympic champions.

Away from competition, Springfield has remained a familiar part of Russell’s journey, sharing in the demanding periods of training and competition that accompanied her pursuit of Olympic success. Their connection has consequently grown from a college athletics relationship into a long-term partnership.

The engagement now marks another significant chapter for Russell, this time away from the track. After reaching the pinnacle of her sporting career in Paris, the 100m hurdles champion is beginning a new phase of her personal life alongside a partner who has been part of her journey since their university days.

From competing on the same collegiate stage to building a future together, Russell and Springfield’s story has evolved alongside two careers shaped by track and field. The Olympic champion will now balance this new personal chapter with her continuing ambitions in athletics

The women’s race at the 2026 TCS Amsterdam Marathon is shaping up to be one of the most competitive editions in recent years, with a deep international field set to take on the fast Dutch course on Sunday, October 18.

At the centre of the contest will be four Ethiopian athletes who have already broken the 2:20 barrier, creating the prospect of a fascinating battle for victory and a possible assault on the course record of 2:16:52.

Defending champion Aynalem Desta will return to Amsterdam looking to retain her title after producing the biggest performance of her career at last year’s 50th edition. Desta won in a personal best of 2:17:37, establishing herself among the leading marathoners in the field and setting the benchmark for this year’s contenders.

Standing in her way will be fellow Ethiopian Meseret Belete Tola, a former Amsterdam champion who knows exactly what it takes to succeed on the course. Belete Tola captured the 2023 edition in 2:18:21, and her return adds another layer of experience and proven quality to an already formidable lineup.

The field also includes Mestawut Fikir Truneh, who arrives with an impressive marathon pedigree. Truneh finished runner-up at the 2024 Berlin Marathon in 2:18:48, demonstrating her ability to compete at the highest level on one of the world's major marathon stages.

Completing the quartet of sub-2:20 Ethiopians is Buze Diriba, whose personal best of 2:19:34 places her firmly among the leading contenders. With four athletes possessing credentials below 2:20, the race is likely to develop into a tightly contested battle from the opening kilometres.

The depth extends well beyond the leading quartet. Desi Jisa Mokonin, representing Bahrain, Yeshi Kalayu Chekole of Ethiopia and Nazret Weldu Gebrehiwet of Eritrea have all established themselves as serious marathon competitors with performances approaching the 2:20 mark.

Another major name to watch is Abeba Aregawi, the former 1500m world champion representing Sweden. Aregawi has successfully transferred her talents to the marathon and made headlines earlier this year by setting a Swedish national record of 2:23:12 on her debut. Her presence adds another intriguing dimension to an already high-quality field.

Amsterdam’s marathon course has consistently provided an opportunity for elite athletes to produce fast times, and this year’s women’s lineup has the depth to turn the race into a genuine test of both championship racing and outright speed.

With four athletes already inside 2:20, two former Amsterdam champions returning to the start line and several other accomplished marathoners ready to challenge them, the battle is expected to remain open deep into the race.

The ultimate target will be the Amsterdam women’s course record of 2:16:52. Whether the leading contenders can threaten that mark remains to be seen, but the quality assembled for October 18 ensures that the record will be firmly in the spotlight when the race reaches its spectacular finish inside the Olympic Stadium.

The 2026 Valencia Half Marathon is shaping up to be a thrilling contest of speed, endurance and tactical brilliance, with some of the world’s finest road runners set to converge in Spain on October 25.

Kenya’s Daniel Ebenyo and Alex Matata will be among the leading contenders, facing a formidable Ethiopian challenge spearheaded by Jemal Yimer and Tadese Worku. The field also features Rodrigue Kwizera, who boasts the fastest personal best among the leading entrants at 58:16.

Ebenyo arrives with a personal best of 59:04, placing him firmly among the athletes capable of sustaining a demanding pace over the 21.1-kilometre distance. Matata, who owns a 59:11 best, adds further Kenyan strength, while Andrea Kiptoo brings another sub-60-minute credential to the race.

Yimer has already established himself as one of the fastest athletes in the field with a 58:33 personal best, while Worku has clocked 58:35. Kenya’s Owen Korir, with a best of 58:58, further underlines the remarkable depth of the men's lineup.

Valencia Half Marathon 2026 Entries

1. Rodrigue Kwizera (Spain) — 58:16

2. Jemal Yimer (Ethiopia) — 58:33

3. Tadese Worku (Ethiopia) — 58:35

4. Owen Korir (Kenya) — 58:58

5. Daniel Ebenyo (Kenya) — 59:04

6. Alex Matata (Kenya) — 59:11

7. Andrea Kiptoo (Kenya) — 59:11

8. Thierry Ndikumwenayo (Spain) — 59:42

9. Said Mechaal (Spain) — 1:00:24

10. Adel Mechaal (Spain) — 1:02:30

Kwizera, who finished second in Valencia last year, leads the field on paper and will be seeking another standout performance on the famously fast Valencia course. With several athletes carrying sub-60-minute credentials, the race has the ingredients for an aggressive battle from the opening kilometres.

Beyond the headline names, the men’s field is deep and highly competitive, bringing together a strong collection of experienced international athletes with proven ability over the half-marathon distance. With so much quality packed into the lineup, the race promises an intriguing battle in which tactics, endurance, positioning and finishing speed could all play a crucial role in determining the eventual champion.

Yet personal bests will count for little once the gun goes off. The title could ultimately be decided by patience, positioning and the ability to respond when the pace begins to rise in the closing stages. Every surge, every tactical move and every second saved could prove decisive on the road to the finish.

With Kenya, Ethiopia and Spain represented by athletes of exceptional quality, Valencia promises a high-octane men's showdown in which the leaders are likely to be separated by only a handful of seconds. The final kilometres could provide the defining moments of a race packed with speed, ambition and anticipation.

On October 25, the question will be simple: who has the strength to command the streets of Valencia and claim the coveted half-marathon crown?

April 19, 1982. The Boston Marathon unfolded under unusually warm, sunny conditions, and by the closing stages, the race had become a private battle between two very different American runners: Alberto Salazar, already one of the biggest names in distance running, and Dick Beardsley, the Minnesota runner who had emerged as a serious marathon contender.

For roughly nine miles, from the Newton Hills toward the finish, Beardsley did much of the leading, with Salazar tucked close behind. Neither man could shake the other. They ran deep into Boston locked together, trading surges and refusing to surrender an inch as the crowds along the course grew louder.

Salazar finally made his decisive move with less than a mile remaining. He opened a small gap, but Beardsley refused to disappear. The Minnesota runner chased him through the final streets, closing again as they approached the finish.

Then came the final sprint.

Salazar held his form and reached the finish first in 2:08:52, with Beardsley only two seconds behind in 2:08:54. It was an extraordinary result: both men broke 2:09 in the same Boston Marathon, and both shattered the previous course record.

The race became known as the “Duel in the Sun,” and it remains one of the most celebrated head-to-head battles in Boston Marathon history. Beardsley had not won, but his performance established him as one of America's elite marathoners.

For Salazar, however, victory came at an enormous physical cost. Immediately after crossing the finish line, he collapsed and required emergency treatment, including several litres of intravenous saline. The combination of heat, dehydration and an all-out effort had pushed his body to the limit.

Salazar's marathon career would never again produce quite the same kind of performance. His celebrated 1981 New York City Marathon victory had produced what was initially considered a world record, although the course was later found to be short. His Boston triumph therefore became one of the defining victories of his career.

Beardsley's story would take an even more difficult turn. Injuries disrupted his career, and after returning to the highest level, he suffered a devastating farm accident in 1989. Further accidents, surgeries and severe physical pain followed, eventually leading to a long battle with painkiller addiction.

He eventually overcame that struggle and transformed the darkest chapters of his life into a story of recovery, resilience and redemption.

That is what makes the 1982 Boston Marathon more than a two-second victory.

For one extraordinary afternoon, Salazar and Beardsley produced a marathon duel in which neither man was willing to give way. One crossed the finish line first. The other finished only two seconds behind him.

Two seconds separated them at Boston. Decades later, their legendary duel remains one of the greatest chapters in marathon history.