Thimble Peak, Mountain summit in Santa Catalina Mountains, Arizona, USA.

Thimble Peak is a landmark summit on the south side of the Santa Catalina Mountains north of Tucson, Arizona, within the Pusch Ridge Wilderness of Coronado National Forest. Bear Canyon lies to its east and Sabino Canyon to its west. No trails reach the peak, and the final ascent of its cap requires class 3 to 5 technical climbing.

Thimble Peak takes its name from its shape, which resembles a sewing thimble. The name appears in accounts of the Santa Catalina Mountains north of Tucson, where the peak stands between Bear Canyon to the east and Sabino Canyon to the west, in the Pusch Ridge Wilderness of Coronado National Forest.

The name comes from the peak's outline, which early settlers thought resembled a sewing thimble. The cap sits in the Pusch Ridge Wilderness of Coronado National Forest, between Bear Canyon to the east and Sabino Canyon to the west. No trail reaches the summit, so the final cap is a technical climb of class 3 to 5.

You can reach the peak via Sabino Canyon or Gordon Hirabayashi campground depending on which starting point is closer to you. Since the route requires technical climbing ability, make sure you have the skills and proper gear before heading out.

The summit is known for loose rock formations that create extra hazards during climbing and demand constant care. This instability makes each attempt unpredictable and rewards climbers with solid technical experience.