Lake Sonoma 100 Miler 'Sufferfest'

Welcome to the Lake Sonoma 100 Miler 'Sufferfest', taking place on February 1, 2025. This unique event features a challenging 100-mile trail run with significant elevation gain, offering a festival-like atmosphere for participants and spectators alike.

Event Highlights

Experience the thrill of running through beautiful terrain with an elevation gain of approximately 24,000 feet. The event is designed for seasoned trail runners, ensuring a fast and enjoyable running experience.

Runner Experience

We prioritize the runner's experience with generous cutoff times, excellent aid stations, and dedicated volunteers. Enjoy quality SWAG items and a vibrant atmosphere with live music, food, and drinks at the start/finish area.

Charity and Community

This event supports the Children of Vineyard Workers Scholarship Fund, making it a meaningful experience for all participants. Join us for pre and post-race activities, including shakeout runs and a celebratory dinner.

Registration Information

Registration is open for the 100 Miler, 100 Mile 4 Person Relay, and the Little Baby Backyard run. Don't miss out on this incredible opportunity to challenge yourself and enjoy the camaraderie of fellow runners.