This 57-mile, 8,000+ foot odyssey connects two of our favorite San Diego County wilderness gems: Daley Ranch and Palomar Mountain, in one epic adventure. Starting early at the Daley Ranch dirt lot, riders climb up into the Ranch and flow through scenic doubletrack before slipping out onto the quiet paved roads of Valley Center. From there it's a descent down Cole Grade as Palomar Mountain's imposing peaks stretch across the horizon ahead.
The real challenge begins at Highway 76, where riders turn onto Nate Harrison Grade, a Beyond Category beast of a climb: 100% gravel, 9 miles, 4,200 feet of elevation gain at a punishing 9% average grade. As the scenery shifts from desert to pines, riders eventually reach the Ridge and take in the views at Boucher Tower before making their way to the route's single resupply at Palomar Mountain General Store. From there, riders enjoy a ripping descent down South Grade's 20+ hairpin turns back to the valley floor.
But the adventure isn't over. The route continues past Harrah's Resort, tackling Valley Center Road's climbs before descending Lake Wohlford Road back toward Escondido for the route's sample of singletrack back in the Ranch: the Caballo Trail, navigating some technical terrain before returning to the start.
There are two key regroup opportunities: mile 4.5 before the left turn onto Valley Center Road (ahead of a 10-mile paved section), and mile 29 at the General Store resupply. A shorter 34-mile Ranch to Valley option is also available for those looking to join the fun, saving the big climb for another day. After conquering the route, we'll reconvene at Dixon Lake Picnic Area to swap stories and celebrate the day's accomplishments with Athletic Brewing.
Important Reminders
Bike Setup & Self-Sufficiency: With diverse road and dirt surfaces, the optimal setup is a gravel bike with tubeless tires at least 40mm wide. Come completely self-sufficient with hand pump, CO2 cartridges, extra tubes, multi-tool, chain links, and derailleur hanger. Carry ample food and water for 5+ hours of riding, as Palomar Mountain General Store is your only resupply opportunity.
Route Responsibility & Safety: This is entirely self-supported with no SAG wagon, aid stations, or course marking. You're 100% responsible for navigation, mechanicals, nutrition, and emergency extraction. Download the route to your GPS device and carry a backup navigation method. Cell service is spotty, especially on Palomar Mtn. Weather can change rapidly at elevation. Pack layers and check Valley Center and Palomar Mountain conditions before departure.
Trail Etiquette: Help us preserve access by staying on designated trails and never riding dirt in wet or muddy conditions. When encountering hikers, equestrians, or other riders, slow down, communicate early, and pass safely with a friendly greeting. Respect private property and follow Leave No Trace principles throughout your adventure.
And Lastly: Gravelstoke assumes no responsibility for incidents, injuries, or mishaps; this is strictly a "ride at your own risk" event. We'll have multiple groups rolling at different paces, so find a group that matches your comfort level and fitness. The course remains open to traffic throughout. Obey all traffic laws and stay vigilant for vehicles, especially on the paved sections through Valley Center and descending South Grade. Never cross the center line, and stay as far right as possible at all times, particularly on paved climbs where visibility around blind corners may be limited.
2026 Gravelstoke x Voler Super Cargo Bib is a high performance bib short with a 6+ hour chamois, integrated leg grippers, wide bib straps, and three cargo pockets for comfort and durability on long rides.