The Blackfeet Highway, lying along the east side of the park, is an improved highway, leading from Glacier Park Station to the Canadian line via Babb, Mont., and from the line to Waterton Lakes Park and other Canadian points via Cardston, Alberta. There is also an improved picturesque cut-off highway, which branches from this road at Kennedy Creek Junction, 4 miles north of Babb, leading around the base of Chief Mountain to Waterton Lakes Park. Improved highways lead from the Blackfeet Highway to Two Medicine Lake, the Cutbank Chalets, and Many Glacier Hotel on Swiftcurrent Lake.

The Theodore Roosevelt Highway (US 2) follows the southern boundary of the park from Glacier Park Station to Belton, a distance of 58 miles, and a trip over this highway affords views of excellent scenery.

The spectacular Going-to-the-Sun Highway, well known as one of the outstanding scenic roadways of the world, links the east and west sides of the park, crossing the Continental Divide through Logan Pass at an altitude of 6,654 feet, and connects with the Blackfeet Highway at St. Marys Junction, a distance of 51 miles from Belton. East of the divide an improved spur road leads to Going-to-the-Sun Chalets on famous St. Marys Lake. On the west side at Apgar, 2 miles above Belton, a narrow dirt road follows the north fork of the Flathead River to Bowman and Kintla Lakes.