The Arizona Trail

The Arizona Trail runs 800 miles from the Mexico border at the Coronado National Memorial to the Utah border at Stateline Campground. You traverse Arizona's full ecological range: the saguaro cactus forests of the Sonoran Desert, the sky island mountain ranges of the southeast, the mixed conifer forests of the Mogollon Rim, ponderosa pine on the Colorado Plateau, and the South Rim of the Grand Canyon. No other route in the American Southwest packs this much ecological diversity into a single line.

Overview

The AZT is a designated National Scenic Trail and is managed by the Arizona Trail Association (ATA). It is legal for both hikers/runners and mountain bikers on the vast majority of its length — the exceptions are designated wilderness areas where bikes are prohibited, requiring detours on adjacent dirt roads. Bikepackers navigate these sections with the ATA's published bike bypass routes, which are well-documented and reasonably rideable.

The Route

The southern terminus at Coronado National Memorial begins in Mexico borderlands terrain — grasslands and oak scrub in the Huachuca Mountains. The early miles climb into the Huachucas before descending to the San Pedro River valley, one of the few permanently flowing rivers in Arizona. The river crossing is a spiritual moment — you understand what water means in this landscape by crossing one of its few reliable sources.

The sky island section dominates the southeastern portion of the route. The Chiricahua Mountains, the Santa Catalinas above Tucson, the Rincon Mountains, and the Superstition Wilderness each demand significant climbing from desert valley to forested summit. These transitions from cactus to pine in a single day of travel are the AZT's most distinctive characteristic.

Tucson sits at roughly the one-third mark and provides the largest resupply opportunity south of Flagstaff. After Tucson, the trail climbs toward the Mogollon Rim — the geological escarpment that defines the edge of the Colorado Plateau. The pine-forested Rim country is the AZT's most consistent high-elevation terrain, and in spring it can still hold snow above 7,500 feet into late March.

The Grand Canyon passage requires advanced planning. Most thru-travelers descend the South Kaibab and ascend the North Kaibab, crossing the Colorado River at the bridge near Phantom Ranch. This requires a backcountry permit from the National Park Service — reserved months in advance. Walk-up permits exist but are limited. The inner canyon in spring is manageable; in October it can be brutally hot even at the bottom.

Key Challenges

Water defines every decision on the AZT. The southern desert sections can have 25-plus-mile gaps between reliable water sources. The ATA maintains water caches at some critical points — not guaranteed, often seasonal, and subject to vandalism. You treat the water cache as a bonus, never as your only plan.

The temperature range across the 800 miles and the seasonal window is extraordinary. Starting in February at the Mexican border in 60°F weather, you may encounter snow on the Mogollon Rim in March. A runner who starts in late February in shorts will be in a puffy and waterproof shell two weeks later above Flagstaff.

The Grand Canyon permit situation is the most logistically complex part of the entire route. Apply for a backcountry permit through recreation.gov as far in advance as possible — the first-come window opens four months before your intended date. Many AZT thru-travelers plan their entire schedule around their Grand Canyon permit date.

Best Time to Go

Southbound (Utah to Mexico) in the fall — October into November — avoids the brutal Sonoran Desert heat. Northbound (Mexico to Utah) in late February through April catches the desert in bloom and reaches the high country as snow clears. Both directions are valid; timing is everything.

Summer is not survivable on the desert sections. Ground temperatures in June exceed 140°F on exposed rock. If you're on the AZT south of the Mogollon Rim after May 1, you are making a mistake.

Gear Notes

Sun protection in the desert sections is more critical than warmth gear. A UPF 50+ long-sleeve shirt, sun gloves, a real sun hat, and high-SPF sunscreen applied twice daily are not optional. Sunburn at altitude in the desert progresses to heat illness faster than you expect.

For bikepackers, the wilderness bypasses add mileage but are usually on dirt roads with low traffic. The ATA publishes detailed bike route maps — download them before you leave. The central Arizona rocky singletrack sections are technical enough to warrant a hardtail or full-suspension bike over a gravel bike.

How Others Did It

Karel Sabbe set the FKT in 2020 at 9 days, 9 hours — an incomprehensible effort. Most trail runners complete the AZT in 20–35 days. Bikepackers range from 12 days (elite) to 30 days. The ATA's Thru-Traveler registry has over 1,000 documented completions in both directions and both disciplines. This is a hard route, but it is a doable route, and the community around it reflects that — shared beta is generous, water cache updates are current, and the Arizona Trail Association is one of the most active trail stewardship organizations in the country.