Lake Sonoma 100K / 55K

The California Fall Classic 100K and 55K at Lake Sonoma is set for October 19, 2024, featuring two challenging courses that showcase the stunning scenery of wine country. The 100K serves as a qualifier for the Western States Endurance Run, with an 18-hour cutoff and ample aid stations to support par..

The Napa Fall Wine Country Marathon is a scenic running event held annually in Bothe-Napa Valley State Park, California. Celebrating its 32nd year, the marathon features a challenging course with lush single-track trails, hills, and streams, making it a rewarding experience for participants. The eve..

The Lake Sonoma 100 Miler is a unique and exciting trail running event held in Geyserville, California. This challenging race features approximately 24,000 feet of elevation gain over 100 miles of predominantly singletrack terrain, making it suitable for seasoned trail runners. The event fosters a f..

The Napa Valley Trail Marathon is a scenic running event held annually in Bothe-Napa Valley State Park, California. The 2025 edition, marking its 33rd year, features a challenging course with lush single-track trails, hills, and streams, attracting up to 300 participants. Runners can choose from thr..

The Lake Sonoma 50 Mile event, taking place in Healdsburg, California, on April 12, 2025, features a challenging out-and-back course that showcases the stunning scenery around Lake Sonoma. This event is designed for both experienced runners and newcomers, offering a supportive atmosphere. Participan..

The Napa Valley Endurance Run is a challenging trail running event held in Calistoga, California, featuring four race distances: 50k, 35k, half-marathon, and 10k. Participants traverse the scenic yet rugged trails of Robert Louis Stevenson State Park, with the 50k course boasting over 7,500 feet of ..