Find a Dirty Double interactive map, route profile, and ride description, as well as pictures, personal notes, and more about the Dirty Double bike ride.
145 miles with 14,200 feet of climbing * Recorded with a Garmin Edge 305
28 miles with 4,300 feet of climbing on dirt
Dirty Double • Climbs
Dirty Double • Description
The Dirty Double is an awesome all-terrain ride through East San Diego County. Different distances are available, including a double century with 4 packed dirt sectors, a super century with 3 dirt sectors, and a century with 2 dirt sectors.
This ride includes 3 dirt sectors. Viejas Grade starts at mile 12.9 and is 4.3 miles long with 1,200 feet of elevation gain. Boulder Creek starts at mile 23.5 and is 12.8 miles long with 1,360 feet of elevation gain (with double-digit down- and uphill grades). Black Canyon starts at mile 66.1 and is 11.4 miles long with 1,790 feet of elevation gain.
The route begins in Alpine and leads up to Viejas Grade Road, which includes dirt sector 1. Then it follows Boulder Creek Road, which includes dirt sector 2.
Next, Highway 78 leads down through Santa Ysabel, and Old Julian Highway leads down into Ramona. From here the route climbs Black Canyon Road, which includes dirt sector 3.
Mesa Grande Road turns into Highway 79, which passes through Santa Ysabel, and Wynola Road and Banner Grade Road climb up to Julian.
Next, Highway 79 passes Lake Cuyamaca and descends to Descanso. Japatul Valley Road and Japatul Road continue down towards Loveland Reservoir.
Finally, Dehesa Road drops down to the town of Harbison Canyon, and Harbison Canyon Road and South Grade Road climb back up to Alpine.
Dirty Double • Pictures
[View of Anza-Borrego Desert]
Dirty Double • Personal Notes
The dirt sectors make this ride significantly more challenging and rewarding. This year, none of the riders completed the 200 mile route, which in my opinion is tougher than any of the double centuries I have completed.
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