Learn more about the impact ultramarathon running has on red blood cells and how it may do more harm than good for the body.

After a long trail race, some of your red blood cells may not bend the way they should. That matters because red blood cells have a tight job description.

By Dennis Thompson HealthDay ReporterTHURSDAY, Feb. 19, 2026 (HealthDay News) — Ultra-marathon runners must be incredibly fit to endure races that can extend more than 100 miles, but their bodies pay ...

Comfort is king when it comes to ultra trail running shoes. These are the shoes you should be able to rely on over long and arduous miles. The right shoe should make you feel like you can keep going ...

NPR's science podcast Short Wave talk about how ultrarunning affects the body, the trend of intermittent fasting and how to protect people's mental health when they talk with chatbots.

Running is good for your health, but pushing it too far can take a hidden toll. New research shows that ultramarathons may ...

Discover what ultramarathon runners eat to run 100 miles. This ultra runner enjoys avocados and bison bars, and follows a ...