Trail Running calendar near Lake Sonoma 2026-2027

Run Berkeley's scenic trails at the Grizzly Peak Trail Run in Tilden Regional Park, with distances from a free kids 50 yard dash up to a challenging 50K. Expect rugged singletrack, stocked aid stations, finisher medals and awards for top ru..

Join the Wine Half Marathon in Napa Valley on May 9, 2026, a 13.1 mile route through vineyards from Rutherford to Yountville. Founded by four French American wine professionals, the race blends warm hospitality, surprises, and scenic trails..

Choose from 10K to 50K trail runs at Skyline Wilderness Park in Napa, featuring steep climbs, valley views and well stocked aid stations. Camping, showers and park scenery make this a perfect weekend escape for trail lovers.

Rim Rock 50 Mile Trail Challenge in Napa Valley is a scenic yet rugged two loop course through oak woodlands and exposed ridgelines at Skyline Wilderness Park. Run solo for 50 mile glory or team up for a two person relay and tackle the terr..

Join Wildcat 2026 on May 16 in El Sobrante for scenic half, 10K, 5K and remote run options that boast 360 degree views of the Bay Area. Run for fun or support the East Bay Regional Parks Campership Program.

Run scenic single track trails at China Camp State Park on May 23, 2026 with half marathon, 10K and 5K options. Limited to 275 runners, course offers climbs, views of Mount Tamalpais and the bay, aid stations, shirts and finish medals.

Join Nitro Trail at Point Pinole Regional Shoreline on May 30, 2026 for scenic trail runs offering a half marathon, 10K, 5K and remote runner option. Family friendly vibes, volunteer photographers, and a fundraiser for local park campership..

Join Dirt Circus in Mill Valley for a free community running festival with social runs, an expo, pancake breakfast and local vendors. Costumes are encouraged and the event is cupless so bring a reusable bottle.

Run and camp at Mendocino Woodlands Park for a weekend of scenic trail running, live music and community vibes. Choose 12 hour, 6 hour, half marathon or 10K on a 6 mile single track loop with creek crossings, hot showers and post race lunch..

Run the 39th Ruth Anderson Memorial Endurance Run on October 10, 2026 in San Francisco. Choose 100 km, 50 miles, or 50 km on a scenic paved loop around Lake Merced with chip timing and certified 50K and 50 mile courses.

Experience the Sonoma Fall Classic in Healdsburg wine country where ultrarunning tradition meets festival fun. Choose marathon, Lake Sonoma 50 Mile, ultramarathon and relay options and celebrate trails, community and harvest.

Join the festive Krampus Cross Country in San Francisco with live and virtual options Dec 4 to 7 and the in person race on Dec 6. Pick 5K, 10K or the Naughty Nine Miler and take home a woodallion, tee and beer sampler stein.