Big Sky Chamber of Commerce Share: Chambers of Commerce Big Sky Chamber of Commerce Visit Website 55 Lone Mtn Trl / PO Box 160100 Big Sky, MT 59716-0100 (406) 995-3000 (800) 943-4111 (406) 995-3054 (fax) Map What's Nearby? Distance: 5 10 15 20 25 50 mi.