An ultramarathon runner has broken the women's record at a race in the United States where she ran almost 400 miles in 95 ...

The research, published today in Current Biology, showed that ultramarathoners can burn an astounding 11,000 calories per day ...

Scientists have long hypothesized about a theoretical limit to human energy use. The research, published today in Current ...

This year’s edition of the race that started the backyard ultramarathon craze, the 2025 Big Dog’s Backyard Ultra, saw Sarah ...

More than 700 runners took part in a 50k run based on Taco Bell locations in Denver, Colorado for an annual race.

Because six weeks earlier, I’d finished treatment for stage 3 breast cancer, and better yet, I’m now in complete remission. I ...

Kevin Valente completed a 237-mile ultramarathon in the Italian Alps, taking 5 and a half days to finish the race, while ...

Elite ultramarathon runners can push their bodies to incredible extremes, but a new study suggests even they can't break ...

Battling sleep deprivation, punishing elevation gains and relentless storms, Cortez dispatcher Steven Bogott completed the ...

The 8th edition of the International Taco Bell 50k Ultramarathon took place in Denver on Saturday, Oct. 4, 2025.

Six weeks after her Valentine’s Day run, Renee did another 50-mile fundraising ultramarathon in her neighborhood, this time ...

Japan is currently grappling with a spike in bear attacks that have resulted in an unprecedented number of deaths in the country. There have also been ...