Palomar Mountain Loop, Route 76 (CA)
The Road: A roughly 35-mile loop that winds up and down Mount Palomar about 10 miles south of Temecula, California, near I-15.
The Ride: An exhilarating ascent and descent through some steep hairpins, keep your eye on the road for seriously tight turns. Reward yourself by pulling over and savoring the stellar views, or by taking a self-guided tour of the famous 200-inch Hale Telescope at the Palomar Observatory.
When To Go: Temperatures peak in July, but year-round riding is entirely viable considering the region's relatively mild climate.