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15.6 mi 25.1 km Redtail-Towhee Trails Loop
Intermediate Intermediate
Castro Valley, CA
Intermediate Intermediate
Castro Valley, CA 25 
9.0 mi 14.5 km Scott's Flat Lake Trail - Short Loop
Intermediate Intermediate
Nevada City, CA
Intermediate Intermediate
Nevada City, CA 40 
25.8 mi 41.5 km Tour the ASRA
Intermediate/Difficult Intermediate/Difficult
Auburn Lake Trails, CA
Intermediate/Difficult Intermediate/Difficult
Auburn Lake Trails, CA 39 
22.5 mi 36.3 km Kings Beach Superloop
Difficult Difficult
Kings Beach, CA
Difficult Difficult
Kings Beach, CA
10.8 mi 17.4 km Round Mountain Loop
Intermediate/Difficult Intermediate/Difficult
Nevada City, CA
Intermediate/Difficult Intermediate/Difficult
Nevada City, CA 19 
11.2 mi 18.0 km Pioneer-Halleluja Loop
Intermediate Intermediate
Nevada City, CA
Intermediate Intermediate
Nevada City, CA 11 
15.2 mi 24.4 km Bullards Bar Loop
Intermediate Intermediate
Challenge-Brownsville, CA
Intermediate Intermediate
Challenge-Brownsville, CA
16.5 mi 26.6 km Hole in the Ground Loop
Difficult Difficult
Truckee, CA
Difficult Difficult
Truckee, CA 95 
27.7 mi 44.5 km South Shore to Santa Ana Loop
Intermediate/Difficult Intermediate/Difficult
Big Bear Lake, CA
Intermediate/Difficult Intermediate/Difficult
Big Bear Lake, CA
18.7 mi 30.1 km El Escorpion to Cheeseboro Loop
Intermediate/Difficult Intermediate/Difficult
West Hills, CA
Intermediate/Difficult Intermediate/Difficult
West Hills, CA
12.3 mi 19.8 km Corral Canyon Out and Back
Intermediate/Difficult Intermediate/Difficult
Malibu, CA
Intermediate/Difficult Intermediate/Difficult
Malibu, CA 17 
11.2 mi 18.1 km Fullerton Loop
Intermediate Intermediate
Fullerton, CA
Intermediate Intermediate
Fullerton, CA 178 
14.6 mi 23.5 km Shady Canyon to Bommer Canyon to Quail Hill Loop
Intermediate Intermediate
Irvine, CA
Intermediate Intermediate
Irvine, CA 54 
7.7 mi 12.4 km The Luge Loop
Difficult Difficult
Portola Hills, CA
Difficult Difficult
Portola Hills, CA 81 
10.4 mi 16.8 km Marshall Canyon
Intermediate Intermediate
La Verne, CA
Intermediate Intermediate
La Verne, CA 127 
17.2 mi 27.7 km New Millennium Trail + Las Virgenes Downhill
Intermediate/Difficult Intermediate/Difficult
Agoura, CA
Intermediate/Difficult Intermediate/Difficult
Agoura, CA 51 
15.0 mi 24.1 km Mt. Lukens from the Fire Station
Intermediate Intermediate
La Cañada Flintridge, CA
Intermediate Intermediate
La Cañada Flintridge, CA 17 
15.6 mi 25.0 km Strawberry Peak Loop
Difficult Difficult
Altadena, CA
Difficult Difficult
Altadena, CA 67 
14.9 mi 24.0 km Mount Pinos Loop
Intermediate Intermediate
Pine Mountain Club, CA
Intermediate Intermediate
Pine Mountain Club, CA 44 
20.3 mi 32.7 km Green Lake Loop
Very Difficult Very Difficult
West Bishop, CA
Very Difficult Very Difficult
West Bishop, CA
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