Outlast Philadelphia

Outlast Philadelphia is a six-hour trail challenge held in Coatesville, Pennsylvania, on November 7, 2026, starting at 8 a.m. The format is simple to describe and hard to do: you run a 5K loop at the top of every hour, and every loop has to be finished inside its hour. Finish early and the leftover time is your rest; miss the cutoff and your day is over. Six loops is the maximum, which adds up to roughly 18 miles. Patches, medals and a place on a national leaderboard with cash prizes are on the line.

What this really tests is restraint. The temptation is to run the early loops fast to bank rest, but the runners still standing at hour five are usually the ones who kept every lap at the same easy effort and used the breaks to eat and drink. Come prepared with food you can stomach, a change of socks, and a plan for how hard each loop should feel.