San Gabriel Mountains National Monument
Address: 110 N. Wabash Avenue Glendora, CA 91741
Hours of Operation: Open Monday-Friday from 8 a.m. - 4:30 p.m. Closed daily from 1 - 1:30 p.m. for lunch. (Closed on federal holidays)
Office Phone: (626) 335-1251
Mailing Address: 110 N. Wabash Avenue Glendora, CA 91741
Additional Office Information
Adventure & Interagency Passes sold Monday through Wednesday only (no federal holidays) 8 a.m.-4:15 p.m.
On rare occasion, a staff member may be able to sell a pass on a Thursday. Call ahead to confirm pass availability.