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 ...

Running a marathon used to be the standard bucket list achievement, with the sport seeing massive growth in the last 10 years or so. But ultra running, once the domain of an elite minority, is also ...

Ready to run an ultramarathon? Intrigued, but terrified? Ultra running might sound intimidating, but with a little preparation and the right mindset, it’s completely doable, and dare we say it can ...

A marathon is never easy, so progressing to running your first ultra marathon (or simply, ultra) will seem pretty daunting. There may be marathon in the name, but in reality, running your first ultra ...

The thought of coming last in a race fills some people with dread. However, when you run an ultra marathon, the attitude is very different. In fact, the opposite can be true. At these events, just ...

From muscle fibers to mental grit, here’s the science behind why some bodies can endure ultramarathons, while others hit the wall far sooner. Ultramarathons sit at the far edge of what the human body ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. It's the original 100-miler, but that's not the only thing that makes this iconic trail race ...

Run Bermuda’s Backyard Ultra Race was held this weekend, inviting runners to test their endurance while also raising money for charity. A spokesperson previously said, “The local running event with no ...

Thirteen years after its introduction to the world, the Backyard Ultra endurance race format will be brought to Northwest Colorado in June. The last-man-standing competition will feature up to 75 of ...