Mann, her husband, and Werhman put their heads together and came up with the "Run Better" app, a way for runners of all ...

Democrats in Representative Seth Moulton’s hometown are pledging to find a challenger to run against him in the 2026 midterms ...

The SI Swimsuit issue annually features models showing off the year's designer swimwear, but it's also had plenty of big ...

One of these bacteria is particularly neat – it literally eats up the stuff that makes your muscles burn during exercise.

Four female runners lost their lives in brutal attacks after financial disputes with partners. What is being done to keep ...

The reason NFL fans love the Detroit Lions head coach is his authenticity. So it was quite adorable to see the macho Campbell ...

Sha'Carri Richardson debuts the return of Nike Air's original Superfly running shoes, participating in a campaign with the ...

After a week of fan voting, Marine City's Paul Muscat is High School on SI's Michigan Athlete of the week. Poll results and ...

If you’ve ever had a big breakfast right before a run, you’ve probably learned the hard way why it’s not always the best idea ...

Jamie Gane, a para-athlete from Basingstoke, smashed a Guinness World Record by completing a 24-hour challenge.

Dillon Shije wakes up to greet the sun with a run and prayer—continuing a legacy of duty. This story is part of Indigenous in Fitness, a series of articles highlighting the challenges and triumphs ...