Overview
Colchuck Lake is the most popular trail in Okanogan-Wenatchee National Forest's Icicle Creek corridor, and the reputation is earned. The hike gains 2,280 feet over 4.5 miles from the Eightmile Trailhead to a turquoise glacial lake at 5,570 feet, set directly beneath the vertical granite walls of Dragontail Peak (8,840 feet) and Colchuck Peak (8,705 feet). On calm mornings, the lake reflects the peaks like a mirror. By midday, the wind picks up and the talus slopes above the east shore come alive with mountain goats.
This trail is also the approach route for the Core Enchantments zone, reached via Asgard Pass (7,800 feet) above the lake's east end. Overnight permit holders heading into the Enchantments cross the pass and descend into the upper basin. Day hikers turn around at the lake. Both experiences are worthwhile; the lake itself is a full destination and doesn't require the Enchantments lottery permit.
A self-issue Alpine Lakes Wilderness day-use permit is required for this hike from May 15 through October 31 (verify current requirements at the Leavenworth Ranger District before your trip). The permit is free and available at the kiosk at the Eightmile Trailhead. Arrive early: the parking lot holds roughly 150 cars and fills by 7 AM on summer weekends. An overflow lot exists, but it's typically full by 8 AM. Checking trail conditions and any fire or closure notices before driving out is worth the 5 minutes.
The Route
Miles 0 to 1.5 (Forest approach to Colchuck Creek junction). The trail starts at the Eightmile Trailhead and follows Eightmile Creek upstream through mixed conifer forest of Douglas fir, western red cedar, and Engelmann spruce. The grade is moderate. At about 1.5 miles, the trail reaches a junction: right goes toward Lake Stuart and Mountaineer Creek; left crosses Colchuck Creek and heads toward Colchuck Lake. Take the left fork.
Miles 1.5 to 3.5 (Colchuck Creek drainage and steepening terrain). The trail crosses Colchuck Creek on a log bridge and begins climbing more steeply. The forest thins as you gain elevation, and by 3 miles you'll start getting views of the granite walls above. The trail surface transitions from packed dirt to rock slabs and loose gravel.
Miles 3.5 to 4.5 (Final approach, boulder field, lake basin). The last mile is the hardest. The trail crosses a boulder field and climbs through open terrain with increasingly dramatic views of Dragontail Peak directly ahead. At 4.5 miles, the trail levels out as you enter the lake basin. The lake is immediately visible — bright turquoise against the grey granite.
Walk the shoreline for different perspectives. The east shore gives you the clearest view up toward Asgard Pass. The north shore offers the best reflection shots of Dragontail in the morning.
Permit Details
A self-issue Alpine Lakes Wilderness permit is required from May 15 through October 31. These are available at the trailhead kiosk at no cost. Write your name, date, and number in your party on the self-issue form and keep the tag with you.
Day-use permits do not allow you to enter the Core Enchantments zone above Asgard Pass. That requires either a lottery overnight permit or a separate $8/person Core Zone day-use permit (also self-issued at the trailhead kiosk, as of 2025 — verify current fees before your trip). Overnight permits for the Enchantments are lottery-only, with applications opening each March on Recreation.gov. Lottery odds for core zone overnight permits are typically 1 in 40 or worse in recent years.
If you're planning to combine this day hike with other wilderness permits or passes in the region, the America the Beautiful pass covers Northwest Forest Pass fees but does not substitute for wilderness day-use permits.
When to Go
July and August are the primary season. The trail is usually snow-free by mid-July in an average snow year. The lake basin may hold snow patches into late July after a heavy winter. Afternoon thunderstorms are common; start hiking before 7 AM to reach the lake before weather builds. The lake is cold for swimming even in August but photogenic in any conditions.
September and October bring fewer crowds and cooler temperatures. The larch trees at higher elevations (including above Asgard Pass in the Core Enchantments) turn gold in late September, making early October one of the most visually dramatic times in the Alpine Lakes Wilderness. Trail conditions remain generally good through mid-October before early snow closes the upper routes.
Before mid-July in snow years, the trail surface on the upper section and boulder field can be snow-covered and icy. Microspikes are useful in early season. Colchuck Creek can run high and fast in June from snowmelt; the log bridge typically handles this, but high-water crossings at other points on the approach may require care.
What to Bring
Many hikers carry 2 to 3 liters of water for this hike, refilling from Colchuck Creek with a filter on the way. The sustained climb at elevation causes faster dehydration than casual walkers expect. Trekking poles are useful on both the ascent and the rocky descent. The final boulder field section is awkward without them.
Bring layers: temperatures at the lake can drop 15 to 20 degrees below the trailhead, and the open basin is exposed to wind. A rain jacket is smart even on a sunny morning, since thunderstorms can build quickly over the peaks by early afternoon. Sun protection is relevant from treeline to the lake — the terrain is open and the granite reflects significant UV.
Bear canisters are not required for day hikes here, but if you're backpacking, they are required for all overnight travel in the Alpine Lakes Wilderness. The bear canister requirements guide covers which canisters are approved.
Mountain Goat Etiquette
The mountain goat population around Colchuck Lake is habituated to humans and will approach hikers seeking salt from sweat (from boots, packs, and skin). Do not allow goats to approach: make noise, wave your arms, and maintain at least 50 feet of distance. Do not let them lick your gear. They are large animals with sharp horns and unpredictable behavior when crowded.
USFS and NPS guidance on mountain goat encounters recommends hazing (making yourself large, making noise) rather than retreat. Keep dogs leashed and close if you bring one. More detailed wildlife encounter guidance is available through the Okanogan-Wenatchee National Forest website.
Getting There
From Leavenworth, follow Front Street west to Icicle Road (also signed as Icicle Creek Road). Drive 8 miles up Icicle Creek Road to the Eightmile Trailhead on the right. The road is paved to the trailhead. The parking lot is large but fills by 7 AM on summer weekends. An overflow lot is a short walk back toward the road.
For visitors coming from Seattle, the drive is approximately 2.5 hours via US-2 east over Stevens Pass to Leavenworth. Download offline maps before leaving cell range: service on Icicle Creek Road is essentially nonexistent. The Leave No Trace principles guide is worth reviewing before your first trip into the Alpine Lakes Wilderness — it's one of the most heavily used wilderness areas in the Pacific Northwest and shows the strain.
For those combining this hike with other Icicle Creek destinations, the Lake Stuart Trail starts from a trailhead about 1 mile further up Icicle Creek Road and is a good second day if you're camping nearby.