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When kids run, they don’t track their heart rates or pay attention to their paces. They just zoom along however fast as they like, and they often laugh while they do it. That kind of joy in running can be rare to capture as an adult. But there’s one workout that brings a bit of that fun back: the Fartlek.

Sure, the term may sound a little silly. For that, you can blame the Swedes—Fartlek translates as “speed play” or “speed game” in Swedish. “I like to remind my athletes that [Fartleks are] just basically playing with speed in a way that feels good to them on the day,” says USATF-, RRCA-, and UESCA-certified running coach Amie Dworecki, CPT. “It does involve some faster running, but running in a way that's fun.”

If this sounds like something your training plan could use more of, here’s what you need to know about Fartlek training, why it could benefit your running, and how to get the most out of this workout.

What is a Fartlek?

The premise of Fartlek training is fairly simple. “It's basically short bursts of speed when you're running mixed in with your regular running pace,” says USATF- and RRCA-certified running coach Marnie Kunz, CPT. Those bursts can be as random as sprinting to the next stop sign every time you see a red car. Or you can have more structured sets of one minute quicker, then three minutes easier, for example. Either way, it’s continuous running, so you return to your relaxed, conversational base pace after each burst of speed.

The idea behind the workout came from Swedish national cross-country coach Gösta Holmér in the 1930s. He wanted to make his struggling team more competitive by combining speed work with endurance training. It worked: His runners began breaking records in multiple events—and the rest of the world began taking notice. Now, Fartleks are a staple part of many running programs.

The difference between intervals and Fartlek training

Both Fartlek and interval workouts are forms of speed training where you push the pace for a while, then let your body recover somewhat before pushing again. But while intervals are precisely measured, and often done on a track, Fartleks are more informal. You can do them anywhere, and the bursts of speed may vary in distance or intensity based on how you’re feeling.

Also, even when you pick up the pace, you aren’t pushing so hard that you need to stop running after a faster burst, says Dworecki. “You don't want to hit that 10 out of 10 to where you feel like you have to walk afterward.” While after an interval, you may take a break to huff and puff on the side of the track with your hands on your knees, the point of a Fartlek is to keep running the whole time to build your endurance while also working on your speed.

These workouts end up being slightly easier on the body because you aren’t pushing quite as hard as you may during intervals. That’s why Dworecki often recommends Fartleks to runners as a precursor to interval training. “It introduces your body into speed work,” she says. That can be helpful both for beginners who are newer to running, or runners who are in the earlier stages of a training cycle.

How Fartleks can improve your running

Fartleks have several benefits if you work them into your training strategically.

1. They can help protect your body against injury

Because Fartleks can be used as a way to ease into speed work, Dworecki says they can help to keep your body healthy. “It helps you prevent injuries that might come up if you just jumped into interval training,” she says. For the same reason, she often gives her athletes Fartleks during the week after they’ve had an especially difficult long run when she’s afraid they may not be recovered enough to do harder intervals or tempo runs.

2. They can make you faster

Fartleks are a great way to improve your VO2 max (the gold standard for measuring cardio fitness) and increase your lactate threshold (the point at which lactate accumulates faster than your body can handle, leading to fatigue), according to the National Strength and Conditioning Association. One small 2020 study found that regular Fartlek training can also significantly improve muscular endurance1.

What makes Fartleks unique is that they keep your heart rate high, rather than letting it come all the way down between intervals. This trains your body (and mind) to push hard even as you get tired. “Your body adapts to running faster even when you're fatigued because you're running throughout the workout—you don't get a full recovery,” says Kunz. This can be especially helpful practice for races, where you may want to speed up for a bit to pass other runners, and then still keep running to the finish line.

3. They can help you improve your running form

Spending some time running faster can make you run more efficiently. “You’re improving your biomechanics,” says Kunz. For example, to speed up, most of us naturally pick up our knees more, lean forward, and increase our cadence. All of these add up to a better running form.

4. They can help you rediscover the fun of running

Intervals typically feel like hard work. But a Fartlek can make running feel more like play. “This is a workout that really should leave you feeling good and invigorated,” says Dworecki. And for runners who normally only do steady-paced runs, a Fartlek can switch things up in an unintimidating way.

How do I start Fartlek training?

For beginners, both coaches recommend starting with Fartleks by adding three or so faster segments into your regular run. Each burst should be about 100 meters or a minute long. Then give yourself three to five minutes to recover in between. Don’t worry if that feels too easy. “If you feel like you can do more, then the next time do a little bit more. But it's always better to feel good at the end of your workout rather than risking injury,” Dworecki says.

Advanced runners can work about eight or so faster segments into a Fartlek run. Dworecki suggests keeping each between one and two minutes and doing them at whatever pace feels good to you, with one minute of recovery in between.

No matter your level, remember the basics: Make sure to start with a solid warmup of pre-run dynamic stretches then at least 10 minutes or one mile of easy running, says Kunz. After the speedy stuff is done, finish off with another 10-minute cooldown of easy running.

How to make the most out of Fartlek training

Even though Fartleks are a more casual approach to speed training, they still take a toll on your body. Use them conservatively, warns Dworecki. “It's not a workout you want to do every day because you can overdo it,” she says. Any kind of speed work—whether that’s Fartleks, intervals, or tempo runs—should only be done about once a week, or twice at most if you’re a more experienced runner.

And remember: Don’t take your Fartleks too seriously. These workouts should add a sprinkle of playfulness to your running routine. “You don't want to go too strict on it,” says Dworecki. Instead, just have some fun seeing how fast you can go.

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.