Fresnal Road begins at Garcia Ranch in the Buenos Aires National Wildlife Refuge and crosses into the Coronado National Forest. The road's western end is very close to the US/Mexico border. The borer wall makes an interesting transition as it climbs the western slopes of Cerro del Fresnal. The winding road passes through a prototypical Lower Sonoran Desert landscape of cacti and mesquites as it climbs in and out of sandy desert washes. The east end becomes a steep shelf road as it climbs to intersect with Tre Bolotis Road.
There are numerous dispersed campsites along the trail. The best site sits at the lower end of the shelf road section.