Thumbs Up Summer Slam
Estes Park, United States • 18 Jul 2026
Thumbs Up Summer Slam
This event takes place on the Thumb Open Space trail in Estes Park, Colorado, at the location listed as 101 Peak View Dr. The event runs from sunrise to sunset on the Thumb Open Space out and back trail and is limited to 30 participants.
The course uses a 1 km out and back loop with approximately 540 ft of ascent per loop. At the turnaround point each runner must collect one poker chip, return it to the start, and deposit it in their assigned jar. Poker chips are counted at sunset to determine placing. Unique pins are awarded at three milestone ascent counts and a special award will be given to the winner.
Milestone ascents:
- 14 ascents - Estes Park 7,522'
- 18 ascents - Deer Mountain 10,103'
- 26 ascents - Longs Peak 14,259'
There is no parking available at Thumb Open Space for participants. Organizers suggest arriving by bicycle or by drop off. Participants may drop off supplies at the Start/Finish prior to the event. Registration closes Wed, Jul 15. Visit the organization's website for the most recent information.