Pros & cons
PROS
- Two-lake hanging valley directly beneath Mount Fairchild’s cirque
- See Roaring River’s dramatic 1982 flood-scarred gorge en route
CONS
- Final mile has faint, intermittent tread around tarns and knobs
- Long above-treeline exposure makes lightning a real turnaround risk
Lawn Lake Trailhead on Old Fall River Road (~0.1 mi from US 34). Overflow at the Alluvial Fan and a nearby pullout. Arrive early; the small lot fills.
High, exposed terrain above treeline with frequent afternoon thunderstorms; final approach has faint tread and occasional mud; winter conditions require mountaineering skills and avalanche awareness; timed-entry may restrict midday access.
Overview
This is a demanding, high-reward alpine day. Crystal Lakes sits in a dramatic cirque beneath Mount Fairchild, reached via the Lawn Lake Trail. Expect roughly 15.4 miles total (out-and-back) with about 3,100–3,200 feet of gain and a typical moving time around 7 hours and 40 minutes. It’s a big day at elevation with sustained climbing, but the two turquoise lakes in a hanging valley make it a standout objective. If you’re not up for the full push, Lawn Lake itself is a worthy turnaround.
Route Highlights
Start from the Lawn Lake Trailhead at the base of Old Fall River Road. The trail follows the Roaring River with steady, manageable elevation gain to Lawn Lake. The approach passes visible erosion carved by the 1982 Lawn Lake Dam failure—an impressive (and sobering) geologic scar. From the east end of Lawn Lake, climb toward The Saddle. At the junction, turn left for Crystal Lakes. A side path leads south into the upper basin: pass a small pond, then Little Crystal Lake, and finally Crystal Lake tucked under the cliffs of Fairchild. The final approach crosses meadows, tundra, and knobs; the tread can be faint near the end, so pay attention.
Scenery and Wildlife
This hike transitions from forest into subalpine meadows and then true alpine tundra. In summer, wildflowers can be abundant. Views open over Horseshoe Park on the ascent and back across Lawn Lake from above. The upper cirque holds two lakes split by rocky outcrops; Crystal Lake is thought to be among the park’s deepest. Moose and deer are occasionally spotted, especially near willows around Lawn Lake, and you’ll have long stretches alongside the Roaring River.
Difficulty and Trail Character
It’s a long, high-elevation outing with consistent climbing and some steep, occasionally muddy sections. The final stretch feels more rugged and remote, with intermittent tread around small tarns and low knobs. Trekking poles are helpful, and fitness plus altitude readiness matter here—the lakes sit well above treeline.
Best Time to Hike
Summer into early fall offers the most straightforward travel and the best chance for wildflowers. Start early to beat typical afternoon thunderstorms—lightning is a real hazard above treeline. In winter, this route becomes a mountaineering objective with avalanche and severe weather hazards; only attempt it with proper experience and gear.
Permits, Access, and Parking
During peak season, timed-entry permits can be required to access this area, in addition to regular park entry fees—plan ahead. Backpackers can make this a more relaxed trip by staying at designated sites along the Lawn Lake corridor; wilderness permits are required and competitive in season. Expect mosquitoes at camps near Lawn Lake and food-habituated chipmunks—store food properly. Parking is at the Lawn Lake Trailhead just off US 34 on Old Fall River Road (about 0.1 mile in); overflow is at the Alluvial Fan and a nearby pullout if the small lot fills.
Tips and Navigation
- Don’t follow a casual shoreline path around Lawn Lake; from the east end, head up toward The Saddle and take the signed left toward Crystal Lakes.
- Bring poles, layers, sun protection, and ample water or a filter; it’s a long day with exposure.
- Keep your eye on the weather and turn around if thunder threatens; the route spends substantial time above treeline.
- Expect faint tread in the final approach—slow down and read the terrain.
Elevation
15.4 mi · 7.7 hrWildlife on this trail
Near Crystal Lakes
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