Running 100-mile plus races on consistent basis tests every fiber of your being and challenges every negative thought in your head. Here's one person who knows how to power through it all.

Follow these eight programming principles, and you can run an ultra marathon in twelve months, too.

A recent study examined the relation between age, length of race, and performance in ultra-marathoners.

It turns out the problem with training in heat isn’t dehydration, but something else entirely. This is very different from what we've been told.

A new analysis of thousands of ultra-marathon runners revealed patterns in foot strike, stride length, and blood markers.

Considering trying your first ultra? Here's what to expect and how to adjust your training for success.