Dolomite Pass Trail

Dolomite Pass Trail is an 11-mile (17.7 km) out-and-back from the Helen Lake/Dolomite Pass trailhead. Plan on 6 to 7 hours. It climbs through forest and meadows to Helen Lake, crosses a rocky ridge, drops to Katherine Lake, then follows a faint alpine path to a small tarn at the unmarked pass. The route is classed as difficult. If that full day is too much, Helen Lake makes a worthwhile shorter turnaround: about 7.2 miles round trip.

The trail leaves the Icefields Parkway and gains height through spruce and fir, with exposed roots and some steep stretches underfoot. The trees open around 1.3 miles for views south toward Bowcrow Peak and Bow Peak. Near 1.6 miles, open meadows bring Bow Lake, Crowfoot Mountain, Mount Andromache and Mount Hector into view. At about 2 miles the route enters the Helen Creek drainage; this is where the forest gives way to more open alpine country.

The trail skirts a rockslide, crosses Helen Creek and continues through a broad meadow to Helen Lake, about 3.6 miles from the trailhead. The lake sits below Cirque Peak, with a steep headwall rising beyond its eastern end. On a calm day, look back across the water for a reflection of the peak. The lake is a satisfying end in its own right, and the 7.2-mile return is a good choice if you want the scenery without the pass extension.

For the full route, follow the east side of the lake and climb the rocky slope to the ridge. Near the top, a branch left heads toward Cirque Peak; stay on the main route for Dolomite Pass. The ridge is reached at roughly 4.3 miles one way. From here the route drops more than 300 feet in about half a mile to Katherine Lake, so remember that the climb comes back on your return.

At Katherine Lake, pause on the north shore and look south across the water toward the low ridge and the distant peaks. Mount Assiniboine can appear in the gap between Bow Peak and Crowfoot Mountain. Continue beyond the lake on a boot-beaten path through alpine tundra to a small tarn near Dolomite Pass, roughly 5.5 miles from the start. The pass has no marker and can be hard to pinpoint, so use the tarn and the surrounding ridge as your turn-around rather than following the separate descent toward Dolomite Creek. That continuation is a backcountry route with deep creek crossings, not part of this day hike.

Start from the Helen Lake/Dolomite Pass parking area on Icefields Parkway, across from Crowfoot Glacier Viewpoint. Use the designated lot; roadside parking is prohibited. A valid national park entry pass is required to drive the Icefields Parkway. Dogs are allowed on Banff trails in summer unless a trail restriction says otherwise, and must stay leashed and under control.