Spring Gravel. Honest Miles. Jasper County Grit.
The Colfax Gravel Bonanza is a true early-season gravel test set on a fast and punchy 8-mile loop of classic Jasper County gravel.
This is Spring Classic style racing - short, sharp, and full gas. No fluff. No gimmicks. Just rolling Iowa gravel, crosswinds, positioning, and repeated laps that reward smart tactics and steady legs.
Each lap delivers:
-
"Well-maintained" Jasper County gravel
-
Rolling terrain with just enough bite
-
Open stretches where positioning matters
-
That unmistakable early-season “find your fitness” feeling
Loop racing means spectators can see the action multiple times, and racers get repeated opportunities to make moves, bridge gaps, or hang on.
Whether you're shaking off winter, building toward bigger goals, or just love the rhythm of lap racing, the Colfax Gravel Bonanza delivers honest effort and hometown gravel energy.
Early season. Full gas. Jasper County style.
Four categories
- Men A (Adv) – USAC MTB Cat 1-2, USAC Road CAT 1-3. (6 laps)
- Men B (Beg) - USAC MTB CAT 3, USAC Road CAT 4-5 (4 laps)
- Women Open - USAC MTB CAT 1-2, USAC Road CAT 1-5 (5 laps)
- Men Masters 50+ – USAC MTB CAT 3, USAC Road CAT 50+ (5 laps)