Crumblgy Road is a hiking, biking, and horse trail in Grant County, New Mexico. It is within Gila National Forest. It is 2.2 miles long and begins at 6,940 feet altitude. Traveling the entire trail is 4.5 miles with a total elevation gain of 1,119 feet. The Negro Shack Mine (elevation 7,136 feet) quarry can be seen along the trail.