9,157 ft / 2,791 m

#82 in Arizona

#8,997 in United States


5,157 ft / 1,572 m

#3 in Arizona

#103 in United States


53 summits

#5 in Arizona

#704 in United States

Top climbing months

November   20%

May   16%

June   14%

Most climbed route

Catalina Highway


  • Mount Lemmon is in the Santa Catalina Mountains located in the Coronado National Forest north of Tucson, Arizona.
  • At the peak of Mount Lemmon is an astronomical observatory.
  • Unfortunately for hikers, the Catalina Highway, also called the Mount Lemmon Highway, runs up the Santa Catalina Mountains from the east side of Tucson up to the summit.
  • A dirt access road to the summit on the "back side" of Mount Lemmon offers a secondary route to the top.
1 summit • 1.6 mi • 89 ft gain • 53 min