Happy Jack Endurance Races

Team relay and solo trail running races in the rugged mountains of Wyoming.

The Happy Jack Endurance Races are about challenge, camaraderie and celebration of the human spirit. The meat of the event is composed of three timed races, 24/12/6 hours, and a 100 miler. Contestants in the timed events compete solely on distance travelled and the hundred milers race like normal. The Happy Jack Endurance Races, formerly 24 hours of Laramie, have been around for years with a stead  ...