50K Races

A 50K is a 31.07-mile ultramarathon — the shortest standard distance beyond the marathon and the most common entry point into trail ultrarunning. Most 50Ks are run on singletrack, forest roads, or mixed-terrain courses with meaningful elevation gain, making them as much a test of climbing and technical footing as raw endurance. Below is a running calendar of upcoming 50K races across the US, updated regularly. Check out our Trailfurther training plan.