Forest Road 4066u is a hiking, biking, and horse trail in Catron County, New Mexico. It is within Gila National Forest. It is 1.1 miles long and begins at 7,444 feet altitude. Traveling the entire trail is 2.3 miles with a total elevation gain of 198 feet. The Chuckwagon Tank (elevation 7,349 feet) reservoir can be seen along the trail.