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On the south side of the park. Also crosses the Continental Divide, though at a lower elevation than Logan Pass on the Going to the Sun Road. This is the route used by the Amtrak trains. The view of the forest, river, train tracks and a railroad tunnel all together in one location is very scenic. Several wilderness areas (no roads) are just to the south.
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Sperry Glacier Overlook can be reached by a steep climb up a trail from the Sperry Chalet (2.5 miles to Comeau Pass). The hike takes you by secluded alpine lakes and boulder-strewn meadows and up a stairway hewn into the rock, from which you emerge at Comeau Pass to be greeted by breathtaking views of the Little Matterhorn, Bearhat Mountain, and Mt. Reynolds. Another mile, marked (sometimes confusingly) by cairns, takes you to the edge of the glacier, where there is now a sign with information about the glacier's history. This trail is also one of the best places in the park to see families of mountain goats up close. The glacier is worth seeing, since scientists predict that it have completely disappeared between 2030 and 2050. The Sperry Chalet is also worth seeing, and has a dining hall where non-guests can purchase a hot lunch from an à la carte menu.
Runs nearly parallel to Inside North Fork Road but is paved. It leads to the Huckleberry Mountain Nature Trail. Both roads will eventually take you to Polebridge, but this route is paved most of the way -- except for a section in the middle. Note that all the campgrounds on this far western side of the park are primitive, without running water.
The most spectacular viewpoints in the park are along this road. It is closed to traffic in Winter and open from June - Oct. Depending on weather, it will be open as early as Memorial Day weekend (last Monday in May). You can check the road status online. Highlights include Lake McDonald, Logan Pass at the Continental Divide, Rising Sun, and St. Mary Lake. Road construction is possible in the summer with just one lane open to traffic (and opposing traffic held back). At about 6,600 feet (2,000 meters), Logan Pass is the highest drivable point in or near the park. The car park at Logan Pass fills up early in the morning and becomes a chaotic fight for a space the rest of the day. Though a "must see" for anyone visiting the park, it is not a shortcut from Lake McDonald to St. Mary. Despite the distance being several times longer, it is almost always faster to go around via US Hwy 2 and 89.
State Hwy 49
Has an excellent view of Lower Two Medicine Lake from the top of the hill. Also, it's a shortcut (though narrow and winding) from East Glacier to the east side of the park, so you don't have to go all the way to Browning and back. Beware there is no guardrail on this road. If concerned, only go in the northbound direction, so you won't be driving in the outer lane above the steep edge.
An unpaved road on the park's east side 14 miles south of St. Mary. A trail (not for beginners) goes to Triple Divide Pass where the Continental Divide splits three ways between the Pend Oreille-Columbia Rivers (mouth near Portland, Oregon at Astoria), Missouri-Mississippi Rivers (mouth near New Orleans), and the Saskatchewan-Nelson Rivers (to western Hudson Bay in Manitoba). Facilities are primitive, and this area is only for the most adventurous. However, it's 5 miles west of the US 89 Hwy, making a quick visit for a few photos possible also.
Built in 1913 on the eastern edge of the park, the Glacier Park Lodge was one of Great Northern's luxurious hotels that provided an entry point from the railroad into the park. The lobby is an impressive display of the park's early aesthetics.