The metabolic ceiling represents the maximum number of calories that a body can actually burn. For humans, it is believed to ...

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

When ultra-runners lace up for races that stretch hundreds of miles and days, they're not merely testing their mental grit ...

In this action-packed video, follow the relentless journey of an individual who embodies the spirit of ultramarathons and ...

Ultra runner Paul Johnson is trying to run 700 miles in seven days and raise $700,000 for local Bronx organization Bronx ...

Runner Karl Kevin Ruul set a new Estonian record in the arduous Backyard Ultra World Championships, held at the weekend in ...

Murphy earned his place at Big’s after running for 68 hours at last year’s Team Backyard Ultra Championships, where he ...

Fifty-one-year-old ultra runner Olive Firmeza of Davao City emerged as the female champion in the Bukidnon Elevated Road ...

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

Ukrainian athlete Andrii Tkachuk has won a 24-hour ultramarathon held from 18 to 19 October, covering a distance of 294.062 ...

Move over Dunkin’ — America runs on Taco Bell. Or at least a certain subset of iron-gutted ultra-runners does. On Saturday, Oct. 5, about 1,200 registrants are expected to toe the line at the eighth ...