Lake Sonoma MTB: Grasshopper 2026

The Lake Sonoma MTB Grasshopper offers an exhilarating challenge for mountain bike enthusiasts, inviting riders to conquer some of Northern California's most demanding and rewarding singletrack terrain. Spanning 28.5 miles with over 5,351 feet of climbing, this race is a test of endurance and skill through the rugged landscapes surrounding Lake Sonoma.
The event kicks off in an "en masse" start from the base of the dam, where riders immediately face steep climbs before diving into technical singletrack trails that wind around the lake. The route offers both thrilling descents and challenging ascents, including a grueling climb to Bummer Peak with over 1,000 feet of elevation gain in just three miles. Riders then traverse the peak's rugged terrain en route to North Slope and Boar Scat before descending through Rock Pile Road towards the finish line at Dry Creek Parking Area.
Catering to a range of skill levels from adventure seekers to competitive racers, Grasshoppers allows participants to choose their own category without requiring licenses. The race adheres strictly to traffic laws and rules outlined in the RULES OF ENGAGEMENT document available on the event website.
Top three finishers across all categories will receive podium recognition, with cash prizes for professional riders contingent upon registration numbers. Categories include Pro, U18, 19-29, 30-39, 40-49, 50-59, 60+, Single Speed, and E-Bike divisions for both male and female participants.
Aid stations are strategically placed along the route to provide essential hydration with water, Skratch hydration mixtures, Maurten gels, and snacks. Riders can also drop off bottles at Mike's Bikes van near the start line but must fill their own containers during stops; individual support is not permitted in feed zones.
For those looking for a weekend adventure, camping options are available Friday and Saturday within Warm Springs Picnic Area sites #1 and #2. The event promises an unforgettable blend of scenic beauty and technical challenge, making it a bucket-list race for mountain bikers from around the globe.
Participants can look forward to pushing their limits while enjoying the stunning natural setting that Lake Sonoma provides, ensuring an experience that combines physical prowess with breathtaking views at every turn.