Grand Teton Half Marathon and 5K

Grand Teton Half Marathon and 5K runs over June 4 and 5, 2027, in Wilson, Wyoming. The 5K (3.1 mi) opens the event on the Friday evening at 6:00 p.m., and the half marathon (13.1 mi) starts the following morning at 6:30 a.m., beneath the Teton range.

Jackson Hole sits above 6,000 feet, and the half marathon is exactly the distance at which altitude starts to bite properly: hard enough to need your full aerobic capacity, long enough that you cannot simply hold your breath through it. Arrive early if you can, run the first three miles slower than feels right, and treat the Friday 5K as a shake-out rather than a race.