Train for the Rule of Three Gravel with Cadoo
The Rule of Three Gravel is a Gravel 100K in Walla Walla, WA on Oct 10, 2026. Signing up is the easy part — showing up for every training session until race day is where most people fall off. Cadoo fixes that by turning your build-up into a money-motivated game: stake money on hitting each session, hit your goal and get paid, miss it and your stake goes to the athletes who showed up.
👉 See the Rule of Three Gravel games hub on Cadoo — where training games and event skins for this race go live.
Event details
- Date: Oct 10, 2026
- Location: Walla Walla, WA (West)
- Distance: Gravel 100K
- Terrain: Gravel
- Entry: Open
- Field size: ~800 participants
- Official event site: https://www.ruleofthreegravel.com
- Follow the event: https://instagram.com/ruleofthreegravel
Your Climbing Challenge training game
For an event like this, Cadoo runs a Climbing Challenge game — a 16-week plan pitched at difficulty 7/10. It piles on the elevation so the climbs on course feel like home. Every rep, mile, and minute is verified (reps by CadooVision's AI camera check, distance and steps via Apple Health or Google Health Connect), so the money only moves on work you actually did.
Built for training crews like #PedalPower, #ChainGang, #ClimbKing.
Frequently asked questions
How does a Cadoo training game for the Rule of Three Gravel work?
You join a Climbing Challenge game, stake money on hitting each session over the 16-week build, and Cadoo verifies every workout. Finish your sessions and you get paid from the pot; skip them and your stake goes to the athletes who showed up.
When is the Rule of Three Gravel?
It takes place on Oct 10, 2026 in Walla Walla, WA. A 16-week Cadoo game lines up your training to peak for race day.
Do I have to be fast to join?
No. Cadoo pays you for consistency, not speed — you set the goal, and verified effort is what earns the reward. Steps and distance games welcome every level.
Can my run club or team train together?
Yes — many Cadoo games support team mode, and clubs, brands, and event organizers can host their own branded game. See how to host a fitness game.
Ready to train for the Rule of Three Gravel? Start a training game on Cadoo and turn every session between now and Oct 10, 2026 into money on the line. Organizing or sponsoring this event? Put your brand in the game.





