Six Sigma 60 event

PART OF THE CALIFORNIA DIRT ENDURANCE SERIES

Six Sigma Ranch & Winery · Metric Century · Camping Onsite

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.

This race is being introduced to help fill the endurance gap left by the cancellation of the Tahoe Trail 100 MTB. Camping is available onsite, and the venue has served as the home of NICA NorCal League racing since 2017.

Race Distances
Solo 60-Mile Marathon
60-Mile Duo Team Relay
Solo 30-Mile
Middle School 30-Mile Duo
60-Mile Solo Categories
Juniors 15–16
Juniors 17–18
19–39
40–49
50–59
60+

All Other Distances
14 & Under
18 & Under
19–34
35–49
50+