Overview: The Upper Bertha Falls and Bertha Lake Trail in Waterton Lakes National Park is a classic mountain hike that rewards effort with dramatic scenery. Starting from the Waterton townsite, the trail climbs from the edge of Upper Waterton Lake past Lower and Upper Bertha Falls, before reaching tranquil Bertha Lake nestled in a rugged cirque. Along the way hikers are treated to views of waterfalls, peaks, forest recovering from fire, and wildlife — this hike combines natural variety, alpine beauty, and satisfying challenge into one full-day adventure.

Trail Details:
Trail Length: Approximately 7.4 miles round-trip
Duration: About 4.5 to 5 hours  hiking time (may be longer with breaks, sights, or weather)
Difficulty Level: Moderate (becomes more steep and strenuous past the falls)
Elevation Gain: Roughly 1,958 feet 
Trail Type: Out-and-back

Key Features:

• Lake Shore Beginning: The trail departs from the townsite and follows the shore of Upper Waterton Lake before diverging toward the falls and creek. Early parts are gentler and scenic.
• Lower & Upper Bertha Falls: Waterfalls along the route provide natural rest spots — Lower Falls is more accessible, while Upper Falls are set higher and part of the steeper terrain.
• Switchbacks & Climb: After the falls, a series of switchbacks climbs through recovering forest and subalpine terrain. Expect steeper grades, open views, and more exposed slopes.
• Bertha Lake: The endpoint is an alpine lake ringed by peaks (Bertha Peak, Mount Richards, Mount Alderson). Once at the lake, the trail levels somewhat and allows for rest, reflection, shoreline views, and possibly wandering around portions of the lake.
• Views & Wildflowers: Open views over Waterton Lake and surrounding Rockies, wildflower displays especially in summer, forested sections mixed with burn areas from past fires bring contrast & texture.
• Wildlife & Nature: Forest, creek, lake ecosystems, possibility of wildlife sightings. Because much of the trail is exposed, sun and weather can be a factor.

Trailhead Information:

Starting Point: The trail begins in the village of Waterton Lakes (Waterton townsite) – you start from near the shore of Upper Waterton Lake.
Parking: There is a parking area at the trailhead in the townsite. Parks Canada fees apply to enter the national park.
Access Fees: Entry into Waterton Lakes National Park requires payment of park entrance fees.

Best Season to Visit:

Summer (June through September): Trails generally snow-free, waterfalls flowing well, wildflowers in bloom, good daylight.
Late Spring & Early Fall: Possible snow patches near Bertha Lake or higher up; cooler temperatures; fewer crowds.
Off-season (winter, early spring): Much more snow; trail may be hazardous without specialized gear. Portions of the trail can be snowy or icy even early in the season.

Trail Tips:

• Wear sturdy footwear with good grip; hiking poles helpful especially on steeper switchbacks.
• Bring water, sun protection, and layers as exposure increases higher on the trail.
• Start early to avoid afternoon heat (and possible storms) and to have more solitude.
• Be bear aware; wildlife is present, and some portions of forest are recovering from past fire exposure.
• Check trail conditions in advance, especially for snow, trail washouts, and whether the lower falls bridge or detours are in place.

Trail Highlights:

• Lower Bertha Falls: gentle, photogenic, good warm-up for the hike.
• Upper Bertha Falls provides more dramatic, steeper terrain and noise of water cascading.
• The switchbacks section gives views back over Waterton Lake and valley, with rewarding vistas.
• Bertha Lake itself: quiet alpine lake surrounded by peaks is very satisfying destination.
• Wildflower displays, contrasting forest with burn areas, creek sounds, fresh mountain air.

Additional Information:

The hike is popular and well-used, especially in peak summer. Because of that, early starts or visiting on weekdays helps avoid crowds. The burn from the Kenow Fire is visible; seeing nature’s recovery adds dimension to the hike. Weather above the falls and near the lake can change rapidly; temperature drops, wind, or snow are possible. Bertha Lake sits at a higher elevation so expect cooler conditions there even when it’s warm down below. For those wanting a shorter day, turning around at Lower or Upper Falls is an option. Full-hike to the lake gives more payoff.

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