This is an excellent 20-mile loop which has a bit of everything. There is technical singletrack, 4WD trails, challenging descents, fast rollercoaster doubletrack and a final fat-bike-specific stretch up Canada Ancha through Diablo Canyon. Skinny bikes should take Buckman Road back to the trailhead.
Start at Dead Dog Well, climb to the plateau on to of the Caja del Rio via the Dead Dog Trail
, then ride northwest across the Caja through Sagebrush Flats to the Soda Springs trail. The Soda Springs trail is a challenging, rocky descent and is definitely for advanced riders. As you ride down Soda Springs, you'll be rewarded with amazing views of the Rio Grande. Once you have made the descent to Soda Springs you head North around the tip of the Caja. At this point those on fat bikes can make your way up Canada Ancha through Diablo Canyon back to Dead Dog Well. This is a long ride in sandy conditions but there is excellent technical rocky spots and awesome views within Diablo Canyon. If you are riding a skinny bike the best option is to take Buckman Road South back to Dead Dog Well.