Noble Canyon is a premier downhill ride in the country. Don’t be fooled though, there is some climbing to be done at the outset/northern terminus and on the way down. Officially designated as a National Recreation Trail, it is 10 miles in length and is home to six different ecosystems. Fast and smooth, chunky and technical, a little precipitous in some spots, Noble has everything you’d want in a spectacularly beautiful backcountry ride. Note: it can get very hot in the summer. Check weather conditions and be prepared.
There are several ways to do it: loop it from Pine Valley, shuttle it, or make it part of a longer ride from Cuyamaca Rancho State Park.
Logistics: you need an Adventure Pass for the trailhead in Pine Valley. Get it at the gas station/general store when you exit off I-8 and come into Pine Valley. You can’t miss it. If you park a vehicle as part of a shuttle from Penny Pines, where Noble starts up on the Sunrise Highway, you do not need a day pass.A good place to start your ride plan is here: https://www.mtbproject.com/trail/3978385