Runners Often Think a Lack of Fitness Causes Marathon Fatigue. Here’s the Real Culprit.

Here’s how. To understand fueling and fatigue, you need to understand energy availability, which is the amount of dietary ...

The Mile World Record Has Stood Since 1999. Josh Kerr Is Going to Try to Take It Down.

The Olympic medalist will attempt to break Hicham El Guerrouj’s legendary 3:43.13 at the London Diamond League.

Turn Any Pair of Sunglasses Into Prescription Lenses for Just $20

I get to test a lot of really fun sunglasses here at Runner’s World, but there’s one big problem: I can’t read my GPS watch.

‘I Got Shut Out:’ NYC Runners Struggle to Get Into Local Races as Marathon Demand Soars

The 9+1 program, on the other hand, provides a guaranteed way for New York-area runners to get into the marathon. In 2025, there was a 7 percent increase in runners who completed the 9+1. NYRR doesn’t ...

The Trendiest Activewear in My Dresser Drawer Right Now Is the Lululemon Swiftly Mid-Rise Short

Leopard print is the pattern of the season and Lululemon has plenty of pieces to help you be on-trend. The Swiftly Mid-Rise ...

Durability Determines Long-Distance Race Performance. This Is the Easiest Way to Measure It.

Imagine you’re two hours into a long run and your pace—one that felt easy and controlled an hour ago—now requires more effort ...

The 3 Women Led Off Course at U.S. Half Champs Are Now Headed to Worlds After Initially Missing Out

World Athletics is making an “exceptional decision” to allow Jess McClain, Emma Grace Hurley, and Ednah Kurgat to compete at ...

I’ll Never Buy a GPS Watch That Doesn’t Offer Turn-By-Turn Navigation

There are two things I refuse to do on that run, however: Look like a tourist and pull out my phone to peek at a map. No ...

Bubblegum Pink Bra and Shorts by Viral TikTok Brand LSKD Are Also Functional Run Gear

TikTok sensation LSKD is known for offering outfits with a vibrant color palette. The Accelerate collection is lightweight ...

Run Stronger, Hurt Less With the Hyperice X2: The Best Knee Sleeve for Before and After Your Run

From pre-run prep to post-run relief, the Hyperice X2 is designed to support your joints when they need it most.

HydraPak Tempo Review: The Rare Handheld Bottle That Doesn’t Annoy

The HydraPak Tempo Bottle is lightweight, affordable, and genuinely comfortable to carry on long runs. The Y-strap hasn’t ...

Pro Runners Stand Out for Their Strong Mind Game. This Coach Has the Secret to Their Approach.

Plenty of characteristics set me (and other recreational runners) apart from the pros. First, I’m not super fast or winning races. Second, I’m a health and fitness editor who writes about running, but ...