adidas Terrex 20K Trail Run
GO THE DISTANCE, GO FOR SPEED
A behemoth of running races, the adidas Terrex 20K Trail Run is for the boldest competitors. Destroy a near-half marathon on a difficult course that spans nearly the entire front side of Vail Mountain!
SUNDAY, JUNE 8
8:00 AM
IMPORTANT: Registration for this event closes Saturday, June 7 at 6:00 PM. The course map will be available 1 week prior to the race.
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Event Overview
SUNDAY, JUNE 8
One of the more challenging and rewarding 20Ks in the nation, line up alongside some of the Vail Valley’s best trail runners and top professionals at over 8,000 feet. This course — two laps on the 10K course — will truly test your fitness with its constant elevation changes and mountainous terrain. In addition to pride points on the line, the 20K prize purse is also up for grabs!
RETURNING for 2025!
We are continuing to work on reducing waste at the GoPro Mountain Games so all on-mountain Aid Stations will be cupless for 2025. As part of our continued focus on sustainability, participants will receive a free collapsible cup at the race start that can be used at all Mountain Games run events. All athletes should be aware of this change and come prepared for all races.
Times

SUNDAY, JUNE 8
8:00 AM
Rules
RACE CATEGORIES:
Open – Men
Open – Women
- Minimum age to compete is 12 years old based on the athlete’s age at the end of the calendar year on Dec 31, 2025.
- Athlete’s age category is based on their age at the end of the calendar year on Dec 31, 2025.
COURSE, FORMAT & RULES:
- Racers will be sent out in one mass wave.
- Start positions within the wave will not be pre-determined and it is up to the athlete to get into 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.
- Racers will complete 2 laps of the 10K course.
- CUT OFF TIME: Athletes must finish the first 10K lap by 9:30 AM to be eligible to run the full race.
- Athletes that register for the 20K race will not be allowed to change to the 10K race and be eligible for prizes past the closing registration deadline. [Saturday, June 7, 6:00 PM].
- Racers who opt to not run a second lap must notify race staff at the timing tent of their intent to withdraw from the race.
- 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 before 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 cupless for 2025. Participants will receive a free collapsible cup at the race start that can be used for all the Mountain Games run events.
- No tripping, shoving or horseplay will be tolerated and any athlete displaying unsporting like 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 20K Trail Run. Please consider entering the BFGoodrich Rocky Dog Fun Run on Thursday, June 5 if you’d like to run with your pup!
LOCATION:
The race starts and finishes in Nature Valley Mountain Plaza.
Price & Prizes
PRICE
EARLY BIRD PRICING // February 5 – April 1, 2025
$55
STANDARD PRICING // April 2 – May 27, 2025
$60
FOMO PRICING // May 28 – June 7, 2025
$75
PAYOUT
TOTAL PRIZE PURSE: $11,500
OPEN
MEN
1st – $2,500
2nd – $1,500
3rd – $1,000
4th – $500
5th – $250
WOMEN
1st – $2,500
2nd – $1,500
3rd – $1,000
4th – $500
5th – $250
PRIZES
Prizes to be determined.

Event Map
RACE START & FINISH:
Nature Valley Mountain Plaza in Vail Village