GoPro Mountain Games add new 20K trail run to Mid-Vail in 2026

The adidas TERREX 20K Trail Run just got a much bigger mountain. For 2026, the course will climb to Mid-Vail for the first time in GoPro Mountain Games history, turning a familiar Vail Village race into a single-loop alpine test that gains more than 2,500 vertical feet and tops out at nearly 9,900 feet.

The Vail Valley Foundation unveiled the route on May 23, and the change is the clearest sign yet that the 20K is being pushed toward a destination-race identity rather than a lap-based tempo effort. In earlier editions, the trail race used a traditional two-lap format. That made pace management and familiarity with the route part of the appeal. The new version replaces that rhythm with one sustained climb, which means runners will have to settle into altitude early, save more for the upper mountain, and be ready for rugged terrain, ski slopes and thinner air above Vail Village.

That shift should matter most to travelers deciding whether to build a Colorado trip around the Games. The course now reads like a signature mountain challenge, not just another festival race. It fits runners who want a hard-earned summit feel and the kind of high-elevation scenery that defines early summer in Vail. It is a different proposition from the old two-lap setup, which rewarded repeatable splits and a more controlled effort. The new route asks for stronger climbing legs, sharper pacing judgment and more respect for altitude from the start.

The race will unfold during the GoPro Mountain Games, set for June 4-7 in Vail, Colorado. That weekend already pulls in a broad mix of mountain sports, from biking and climbing to rafting, fishing, yoga and slackline events, giving the 20K a stage surrounded by one of the busiest outdoor festivals in the Rockies. In 2025, the Mountain Games drew 94,503 attendees, posted a 96% satisfaction rate and an 85 net promoter score, and generated more than 10.4 million social media impressions. The program also featured 35 competitions across 11 sports, including first-time speed climbing and ultrarunning.

For runners, that scale is part of the appeal. The Mountain Games have proven they can handle elite competition and big spectator energy at once, and the 2025 launch of the first mobile app added GPS mapping, custom schedules and push notifications to the mix. The new Mid-Vail climb gives the 20K a stronger identity inside that bigger weekend, and it makes the choice simple for anyone planning a Vail getaway: this is now the course for runners who want their trip to feel as elevated as the finish line.