The most popular route to Assiniboine is through Bryant Creek and over Assiniboine Pass. It is a well-marked trail. The helicopter flight path to Assiniboine follows this hiking route and expect to hear helicopter noise on flight days. Most of the hike follows a creek bottom, so the scenery doesn’t start opening up until the Bryant Creek Warden's Cabin.
The trailhead is the stadium for the Mount Shark cross-country ski trail system. Travel along an old logging road and through the maze of ski trails. The trail passes the Watridge Lake/Karst Trail turnoff (3.7 km), descends a steep hill and crosses a bridge over the Upper Spray River (5.9 km). Continue right (west) at the Palliser Pass Junction (6 km). Cross the Bryant Creek Bridge (6.6 km). Climb a small hill and at the crest turn left following the trail to Trail Center (6.7 km). At Trail Center, the trail forks to the left to a Banff National Park Warden's Cabin. Take the right fork following signs for Assiniboine. Bikes are not permitted west of Trail Center.
The trail climbs gently past the first of the Banff National Park campground at Big Springs BR9 Campground (9.6 km). Continue past the Owl Lake Junction (12 km), the junction for the Marvel Lake BR13 Campground (13 km) and the primitive Bryant Creek Shelter (13.6 km) and McBride’s Camp BR14 (14km). The trail to Wonder Pass branches off to the left at the Bryant Creek Warden’s cabin (14.3 km). Keep following the Bryant Creek Trail past the Bryant Creek Warden's Cabin. At the end of the meadow, cross a stream and enter the woods. Continue past the Allenby Junction BR 17 campground (17.5 km).
Reach the hikers high trail and the horse trail junction (17.8 km). The trail splits into a hiker's high trail (to the right) and a lower horse trail (to the left). It is recommended to turn right and take the hiker's high trail. The hikers high trail turns left at the Brewster Creek/Og Pass/Allenby Pass Junction (18 km) and starts it’s stiff climb up Assiniboine Pass. The high hiking trail and the lower horse trail join below the summit of Assiniboine Pass (22.4 km).
The hikers high trail is closed between August 1st- September 30 to reduce human-grizzly bear conflicts. At this time, Assiniboine Pass can be reached via the lower horse trail. At the junction between the hikers high trail and the horse trail junction (17.8 km), turn right over a bridge and continue up the steep switch backs until you rejoin the high hiking trail (22.4 km) below the summit of Assiniboine Pass.
Before the summit of Assiniboine Pass be attentive and follow the hiking trail, as it turns left, up the final hill to Assiniboine Pass (23 km). Do not follow the old horse trail as it has led some people to Og Meadows. At Assiniboine Pass there is a B.C. Parks information booth marking your entrance into Mount Assiniboine Provincial Park, the Great Divide and the Alberta/British Columbia border.
From Assiniboine Pass it is approximately a 2.1 km hike to Assiniboine Lodge. Continue down Assiniboine Pass and past the O’Brien Meadow Group Campground. Continue past the Og Lake junction. At the next Y junction, follow the signage and the trail branching to the right for the Magog Campground. The Magog Campground is 1.3 km from this junction. Follow the signage and take the trail branching to the left for Assiniboine Lodge and the Naiset Huts. Assiniboine Lodge is 100 meters from the junction. For the Naiset Huts continue past Assiniboine Lodge and turn left after the second lodge cabin. The Naiset Huts are 500 meters past the Assiniboine Lodge toward Wonder Pass.