Distance runner Ashley Paulson of St. George has set a world record in the 100-mile ultramarathon. Friday night, the ...

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

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 ...

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.

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.

Extreme endurance running damages red blood cells in ways that may affect their ability to function properly, according to a study published in the American Society of Hematology's journal Blood Red ...

Jazmine Aranas, Karen Fournier come from different background, but both fell in love with running and want to share that as El Paso Marathon arrives.

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