This diagnostic tool promotes fatphobia, which can cause more health problems than extra weight, and is rooted in racism. It's time to throw it away.

A new study looks at why side stitches happen in runners - and it has nothing to do with your fitness level or what you ate before your workout.

Instability puts strain on your Achilles tendon. Train your body to support your stride from the feet up using these exercises for Achilles injury prevention.

New research finds that, all else being equal, runners don’t have more gastrointestinal problems than cyclists

Here's what to remember when running outside in the cold.

Golden Ticket winner Riley Brady and Coach David Roche on nonbinary athlete inclusion in trail and ultra running.

From new precision surgery techniques to biologic options, a bum knee no longer needs to put you on the bench. Here's what endurance athletes need to know about knee replacement surgery.

Two Indigenous ultrarunners share simple recipes for whole-food endurance.

A great running stride isn’t learned by focusing on your footstrike or cadence - it develops as you improve your body’s strength and mobility.