Sixteen rideable worlds, from a 333m velodrome to a 36km mountain, all free in the browser.
Monsoon Cycles, Colorado Springs · Updated August 16, 2026
Gumwall Grand Prix has sixteen courses: four original Monsoon designs, eleven built on the real mapped centerlines and real elevations of famous circuits around the world, and one real North Texas time-trial loop. Every one is free, right now, in your browser.
OPEN THE GAME| Course | Lap km | Climb m |
|---|---|---|
| The Velodrome | 0.3 | 0 |
| Penny Circuit | 2 | 28 |
| Hetchins Hairpins | 2 | 46 |
| Gumwall Speedway | 2.7 | 6 |
| Moanaco | 3.3 | 87 |
| Lasagna Seca | 3.6 | 66 |
| Interlegos | 4.3 | 86 |
| Suzuku | 5.8 | 84 |
| Monzoon | 5.9 | 39 |
| Bathhurts | 6.2 | 185 |
| Napkins Glen | 6.3 | 82 |
| Spa-Frankenchamps | 7 | 169 |
| King Cobra TT | 10.0 | 52 |
| Le Yawns | 13.5 | 96 |
| Snoredschleife | 20.1 | 507 |
| Pikes Peak | 36.2 | 1530 |
Upload any .fit ride file in the game and it becomes a private course shaped like your real ride.
Every course carries a Prime Line sprint segment and, where the road climbs enough, a Summit Prime. Ride through the gold coin at a segment start for a powerup. Course records live on the in-game leaderboard, and reversed-direction laps keep their own boards.
Yes. The whole of Gumwall Grand Prix is free, in the browser, with no download and no subscription. Sign in only if you want leaderboards, chat, and ride logging.
No. A smart trainer gives you gradient resistance, but a basic trainer plus a Bluetooth speed sensor works with estimated power, and demo mode needs nothing but a keyboard.
The centerline shapes and elevations come from real open map data, so the corners and grades are where they are in life. The worlds around them, and the names, are ours, with no affiliation to or endorsement by any venue.