Cascade Pass Trail
Cascade Pass Trail is a North Cascades National Park day hike that reaches the high saddle of Cascade Pass and is the park’s most popular route for getting into the alpine environment. The corridor climbs steadily from the Cascade River Road area through forest and switchbacks, then opens into subalpine terrain as you near the pass.
The pass sits at tree line (5,392 ft / 1,643 m), and the destination is the overlook zone for broad views of surrounding peaks and glaciers, including Eldorado, Johannesburg, Magic, Mixup, and McGregor.
The route is typically done as an out-and-back: the NPS-described Cascade Pass Trail section is 3.7 miles (6 km) to the pass from the Cascade Pass trailhead, with about 1,700 ft (518 m) of elevation gain.
Expect steep snow lingering late in the season in the Cascade Pass Trail corridor; it can require an ice axe for safe travel as late as July. On busy summer weekends the trail can be quite full.
For logistics, the Cascade River Road leaves State Route 20 at Marblemount and runs to the trailhead. The road is paved for the first third, then becomes gravel, with narrow and steep sections near the end; it typically opens to the Cascade Pass parking lot by the end of June (sometimes later in heavy snow years).
Management constraints are part of planning here: pets are not allowed, fires are not allowed in the backcountry camps in the area, and camping is not allowed directly at Cascade Pass (nearby camps are listed as Pelton Basin, Sahale Glacier, Basin Creek, and Johannesburg). Overnight stays require a backcountry permit, which is limited and can be difficult to obtain during peak times.
Cascade Pass also functions as a hub for longer objectives: from the pass you can continue north on the Sahale Arm Trail or head east toward Stehekin via the Stehekin Valley route system.