The top of Magnolia is dirt and can be washboarded. It has heavy traffic. The Mike Horgan Hill Climb races on Magnolia. Gross Dam Rd. is also dirt. 37 miles.

1. Boulder
2. Boulder Canyon & Magnolia
3. Magnolia & County Rd. 97
4. County Rd. 97 & Coal Creek Canyon
5. Crescent Village
6. Gross Dam Rd. & Flagstaff Rd.
7. Boulder

You may wish to take the Boulder Creek Path up to it's end at Four Mile Canyon instead of Boulder Canyon itself.