The Tour de Big Bear unfolds across multiple challenging routes through the San Bernardino Mountains, reaching elevations up to 8,500 feet. The centerpiece 100-mile century starts at 7 am from Bear Mountain Resort and features the notorious 7.5-mile climb up Onyx Summit in the second half, where most of the significant elevation gain occurs. Riders face a strict 12:30 PM cutoff at the Onyx I – Blue Sky Meadows Aid Station to continue on the full route.

The 70-mile option provides an intermediate challenge with scenic stops at Jenks Lake Road West and South Fork campground, requiring departure from South Fork by 2:00 PM. For gravel enthusiasts, the Dirty Bear covers 50 miles of mixed terrain through dirt roads and pavement, with organizers recommending 40C+ tires with robust sidewalls for the varied surfaces.

Nine well-positioned aid stations staffed by enthusiastic volunteers provide nutrition and hydration throughout all routes, complemented by SAG wagon and mechanical support. The event also features timed KOM/QOM segments on the Onyx Assault climb, with cash prizes and jerseys for top performers.

As the centerpiece of the three-day Big Bear Cycling Festival, the tour creates a festive atmosphere beyond just the riding. The festival includes a Poker Ride around Big Bear Lake where participants collect cards for prizes, and an evening Glow Ride with decorated bikes parading around the resort. Awards recognize achievements from youngest rider to largest participating club, fostering a strong community spirit among the diverse field of cyclists who tackle these demanding mountain routes.