Six Sigma 60

The Six Sigma 60 is a new metric-century MTB endurance event at Six Sigma Ranch & Winery and an official stop in the California Dirt Endurance Series.

Built around a rugged 15-mile loop, riders can choose solo or duo team formats across 30 and 60-mile distances. 

Event added by: billy1979

IMPORTANT: To the best of our knowledge the details provided are accurate at the time of listing. However, as with any outdoor event of this type, there can always be unforeseen circumstances that will lead to changes or cancellations. For all demo days, please check with the organiser directly to confirm the event is going ahead, timing, location, bike availability and any other additional detail.