adidas Terrex 10K Spring Runoff

TRAIL RUN AT 9K FEET

NEW FOR 2026: NEW START FORMAT & BIGGER PRIZE PURSE! Craving something a bit more exhilarating than the chill adidas Terrex Aprés 5K Trail Run? Get ready to level up with this epic challenge! Hit the stunning Vail Mountain trails and conquer a thrilling 10K—your next big achievement awaits!

SUNDAY, JUNE 7
8:00 AM

IMPORTANT:

Registration for this event closes Saturday, June 6 at 6:00 PM.
The course map will be available 1 week prior to the race.

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Event Overview

SUNDAY, JUNE 7

Challenge the Vail Valley’s best trail runners along with top professionals at almost 9,000 feet as you compete for a cash purse. This course will truly test your fitness with its constant elevation changes and mountainous terrain. Start training now for one of the most challenging 10Ks in the nation!

All on-mountain aid stations at the GoPro Mountain Games are now 100% cupless as part of our ongoing commitment to sustainability. To help you stay hydrated, all participants will receive a free collapsible cup at the start line to use during all GoPro Mountain Games run events. Please plan ahead and be race-ready and help us keep the mountains clean!

Times

SUNDAY, JUNE 7

8:00 AM

Rules

Athlete’s age category is based on their age at the end of the calendar year on December 31, 2026.
Minimum age to compete is 12 years old based on the athlete’s age at the end of the calendar year on Dec 31, 2026.

cOURSE, FORMAT & RULES:

Racers will be sent out in one mass wave.
NEW START FORMAT FOR 2026: Start positions within each wave will not be pre-determined. The adidas TERREX 10K Spring Runoff and adidas TERREX 20K Trail Run will start at the same time, with the fastest competitors from each race lining up at the front of the start area. Athletes are responsible for positioning themselves in their desired start location.
Participants must follow all course markings and know/understand the course map. All course markings for this event will be black signs with RED arrows.
Along the course, athletes will have to run on all types of terrain including Forest Service access dirt roads, uneven, rocky conditions, grass, loose gravel and undulating single track.
Athletes who deviate from the official course will be disqualified.
Due to the terrain, no strollers will be allowed on course.
The course map will be available 1 week prior to the race.
There are two 2 aid stations on course where water and sports drink will be provided.
- As a reminder, all on-mountain aid stations are now cupless. Participants will receive a free collapsible cup at the race start that can be used for all GoPro Mountain Games run events.
No tripping, shoving or horseplay will be tolerated and any athlete displaying in unsporting conduct will be pulled from the course and disqualified.
Athletes who miss the race start may still compete, but the clock will have started at the race start rather than the athlete’s actual start time. No exceptions will be made.
Racecourse closes 10 minutes after posted start time. Racers who do not start before then, won’t be able to start.
Dogs are not permitted to run in the adidas Terrex 10K Spring Runoff. Please consider entering the Rocky Dog Fun Run on Thursday, June 4 if you’d like to run with your pup!