Trail Overview
12 Mile Trail offers an engaging moderate off-road experience for four-wheel-drive vehicles and SxSs looking to explore the rugged desert terrain of southern Arizona between Interstate 19 and West Arivaca Road. This point-to-point route traverses rolling hills and sandy washes, presenting a mix of off-camber turns, steep, short climbs, and rocky paths that showcase the beautiful desert landscape flanked by Diablito and Saucito mountains. While much of the trail can be navigated in high-clearance vehicles under dry conditions, certain obstacles like steep drop-offs coming out of sandy riverbeds require careful line choice and four-wheel-drive. Drivers will find a front axle sway bar disconnect highly useful for keeping tires planted on the uneven terrain.
Winding through Arizona State Trust Land, this trail climbs from 3,102 feet to a peak elevation of 3,723 feet, offering panoramic views of the surrounding peaks and grazing cattle herds. Because the entire route lies within state trust land, a valid Arizona State Land Department recreation permit is required to access the trail. The terrain is highly susceptible to weather changes; recent rains can quickly wash out sections, leaving deep mud pits and eroded ruts that elevate the technical difficulty. Visitors should also remain highly alert and exercise caution, as this remote corridor near the border is actively monitored by U.S. Border Patrol and is frequently used by hunters and for illegal transit.
Difficulty
It would be wise to have front axle sway bar disconnect for small portions of this trail. Most of it if not all can be driven without 4 wheel drive depending on weather and recent rain caused terrain changes. There are a few steep climbs coming out of river beds, and sharp steep drop offs that require choice of line to traverse. Recent rain can cause several water filled mud pits, and deep ruts.
Access Description
A valid Arizona State Land Department (ASLD) recreation permit is required to traverse this trail, as it crosses Arizona State Trust Land. Visitors should note that while an older, expired private property sign exists at the trailhead, the route is entirely on State Trust Land. Due to proximity to the border, expect active U.S. Border Patrol presence and exercise caution.
