King Canyon Trail to Wasson Peak

King Canyon Trail is a 7-mile out-and-back from King Canyon Trailhead to Wasson Peak, 3.5 miles each way. The trail climbs out of Tucson Mountain Park and into Saguaro's Tucson Mountain District; the final 0.3 mile follows Hugh Norris Trail to Wasson, the 4,687-foot high point of the Tucson Mountains. Allow about four to four and a half hours. If you want a direct summit hike from this side of the range, this is the route. The payoff is an open, 360-degree view across Tucson and the surrounding desert.

The first 0.9 mile rises gradually to Mam-A-Gah Picnic Area, named for a Tohono O'odham chief. The next 1.4 miles are steeper as you climb toward the Sweetwater Trail junction. Then come 0.9 mile of switchbacks to Hugh Norris Trail, followed by the final 0.3-mile push to the peak. Those named junctions make useful checkpoints; turn around at any of them if the climb is taking longer than you expected. The return follows the same route down.

The King Canyon Trailhead serves several hikes, and the nearby King Canyon Wash Trail is easy to confuse with the summit route. It follows the dry wash and meets King Canyon Trail again about 0.9 mile up. For Wasson, take King Canyon Trail itself through the Sweetwater junction to Hugh Norris. Signs and forks can be confusing, especially if you are considering a loop. The shorter 2.4-mile King Canyon/Gould Mine loop is a different hike and does not reach the summit; a 7.8-mile loop adds several trails and is not this out-and-back.

This is a real uphill effort, with uneven rock, natural steps, and loose gravel on sections of the climb and descent. Walkers often mention the loose footing and find poles helpful, especially coming back down. The desert terrain is open to the sun, so heat can make the climb feel harder than the mileage suggests. The park warns that strenuous activity in extreme heat is hazardous and recommends one gallon of water per person per day.

Wasson Peak stands at 4,687 feet and is the highest point in the Tucson Mountains. The broad summit gives you the full reason for the climb: a 360-degree sweep over Tucson, the desert valleys, and the surrounding peaks. Give yourself a few minutes to look around before heading down; the view changes as you turn, and the rocky trail below makes a good foreground for a wide desert frame.

The first mile crosses dinosaur-age red beds with arkose deposits from the bottom of an ancient lake. Higher up, the rugged bedrock from Gates Pass toward Wasson Peak is Cat Mountain Tuff, formed by volcanic eruptions roughly 70 to 75 million years ago. The climb is a good one for noticing the change from canyon wash and sedimentary rock to the harder volcanic slopes.

Saguaros and other Sonoran Desert plants fill the lower slopes. Owl clover and Mexican goldpoppies have been noted along King Canyon, but there is no guaranteed bloom window, so treat flowers as a bonus rather than a reason to plan around a particular week. The scenery is strongest when you look back across the cactus forest as you gain the ridge.

King Canyon Trailhead and its parking area sit across Kinney Road from the Arizona-Sonora Desert Museum, in Tucson Mountain Park just outside Saguaro National Park. Benches, cellular signal, and auto and bus/RV parking are listed there; toilets and drinking water were not listed. The hike enters Saguaro, where anyone age 16 or older entering on foot needs an individual park entrance pass. Pets are prohibited on park trails, and livestock are barred above the Sweetwater junction.