Imogene Pass – which gains a gasping 4,300 feet of elevation from Telluride, Colorado, before descending into nearby Ouray – is an off-roader’s dream. While not as technical or obstacle-ridden as Utah’s Metal Masher or California’s Rubicon Trail, Imogene Pass nevertheless taxes one’s nerves, particularly if encountering oncoming traffic on any of the route’s extremely narrow spots that just so happen to butt up against a sheer dropoff. Imogene can be a bit anxiety-inducing, but it also offers incredible views of the San Juan Mountains, and history buffs will appreciate the ghost town of Tomboy midway up the Telluride side of the pass.