Segment 5: St. Mary Lake to St. Mary Entrance is the grand finale of the eastbound journey along Going-to-the-Sun Road. This section, spanning roughly 8 miles (13 km), offers a peaceful transition from the alpine grandeur of the park’s interior to the rolling prairie lands beyond its boundaries. While it might not have the dramatic cliffside drives of earlier segments, it delivers a serene beauty, cultural significance, and a sense of closure to one of the most spectacular drives in North America.
Driving this final leg, you’ll notice the scenery gradually opening up. Towering peaks still rise behind you, but the views ahead stretch toward wide-open valleys and the vast Montana sky. The road traces the northern shore of St. Mary Lake before reaching the small but vibrant community of St. Mary at the park’s eastern entrance.
St. Mary Lake Shoreline
Leaving the Wild Goose Island Overlook behind, the road continues eastward along the northern edge of St. Mary Lake. This portion offers multiple smaller pullouts where you can stop to take in the turquoise waters and the surrounding peaks. In the early morning, the lake often mirrors the mountains with near-perfect reflections, while in the afternoon, wind can create shimmering ripples across the surface.
Wildlife sightings are common here — look for deer grazing near the shore or bald eagles gliding overhead. The calmness of this stretch can be a welcome contrast after the busier overlooks earlier on the road.
Rising Sun Area
One of the key stops along this segment is the Rising Sun Motor Inn and Cabins area. Established in the 1940s, Rising Sun provides lodging, a general store, and access to several hiking trails. The location is a good base for exploring the eastern side of the park without venturing too far from the main road.
Across the street, the Rising Sun Picnic Area offers lakeside tables and shoreline access, making it a great place to relax with a meal while soaking in the views. On calm days, you might even spot trout in the shallows.
Sun Point Nature Trail
Further east, you’ll find Sun Point, a short but highly rewarding stop. A quick walk from the parking lot leads to an elevated point that juts into St. Mary Lake, providing panoramic views of both the lake and the surrounding peaks. Interpretive signs along the way highlight the area’s geology and history, including the effects of past wildfires that have shaped the landscape.
The trail network here also connects to Sunrift Gorge and Baring Falls, allowing visitors to create a short hiking loop without straying too far from the road.
Siyeh Bend’s Eastern Perspective
Before reaching the lower elevations, you may pass a few spots where you can look back toward Siyeh Bend and the high country beyond. These perspectives are particularly striking in late summer, when wildflowers bloom along the roadside and the mountains stand in stark contrast against deep blue skies.
Approaching St. Mary Valley
As the road begins its final gentle descent, the dense forest opens up to reveal the expansive St. Mary Valley. This is where the alpine ecosystem meets the grasslands of the Great Plains. The change in terrain is dramatic — suddenly the horizon feels vast, the air drier, and the vegetation different. You might spot pronghorn or even black bears foraging in the transition zone.
St. Mary Visitor Center
Near the park’s eastern boundary lies the St. Mary Visitor Center, a key resource for anyone entering or exiting Glacier National Park. The center features informative exhibits on the park’s geology, wildlife, and the cultural history of the Blackfeet Nation, whose ancestral lands border the park.
During peak season, the visitor center also serves as a shuttle hub, providing access to the park’s free shuttle system that runs the length of Going-to-the-Sun Road. It’s a good place to check current road conditions, upcoming ranger programs, and weather updates before continuing your journey.
St. Mary Entrance
The St. Mary Entrance marks the end of your eastbound drive. Beyond the gates, U.S. Highway 89 connects travelers to other parts of Montana and beyond. From here, many visitors choose to explore the Blackfeet Reservation, head south toward Two Medicine, or make their way to Many Glacier — another jewel of Glacier National Park.
Even though the drive has ended, the memories of crystal-clear lakes, towering peaks, and winding mountain roads will linger. This segment, though less dramatic in topography, offers a fitting conclusion to a road that showcases the full spectrum of Glacier’s beauty.
Driving Tips for Segment 5
- Speed Limits: This stretch is more forgiving than earlier segments, but wildlife crossings are frequent — stay alert.
- Photography: The eastern shore of St. Mary Lake provides excellent morning light for photography.
- Timing: Allow 20–30 minutes without stops, or up to 2 hours if you plan to visit Rising Sun, Sun Point, and other overlooks.
Why This Segment Matters
Segment 5 is more than just a “drive to the exit.” It encapsulates the gradual transformation from rugged mountain landscapes to open plains, reminding travelers that Glacier National Park exists at the crossroads of two distinct ecosystems. The journey along the lake’s edge, punctuated by historic lodges, quiet overlooks, and cultural landmarks, offers a reflective conclusion to one of the most remarkable roads in the world.
Whether you’re starting or ending your trip here, the St. Mary Lake to St. Mary Entrance stretch is a chapter worth savoring — a reminder that sometimes the quieter parts of a journey leave the most lasting impressions.