More than 45 Years in the running. The Terrible Two is one of America's most challenging endurance road cycling events.
Sebastopol, California
Sonoma County's longest running and most challenging timed road cycling event.
The Terrible Two is our region's version of an epic, and has been running strong since 1976.
The 2025 Terrible Two offers three routes that take in some of the most spectacular and challenging scenery that Sonoma County has to offer.
Redesigned for 2025 to remain entirely within Sonoma Countyincluding the full Geysers loop, Stewarts Point-Skaggs Springs Rd and Fort Ross
The second half of the Terrible Two including Stewarts Point-Skaggs Springs Rd, Fort Ross and so much more
The Geysers loop with tons of fun and beautiful miles with plenty of rest stops
The Terrible Two proudly serves Hammer Nutrition fuels and supplements for our riders.
