Slim’s River West Trail (Ä’äy ChùWest)
45KM
1.4kM
4d
A journey to the Ice Age. The Slim’s River West Trail is a rugged 45-60km round-trip trek in the heart of the Yukon’s Kluane National Park. It follows the massive, silt-laden Ä’äy Chù (Slim’s River) valley through vast gravel flats and thickets of willow and dwarf birch. The trail culminates at Canada Creek, but the true objective for most hikers is the grueling 1,200m climb up Observation Mountain. From the summit, you are rewarded with a soul-stirring view of the Kaskawulsh Glacier—a literal ocean of ice that flows from the Saint Elias Mountains, some of the highest peaks in North America. This is raw, unadulterated wilderness where silence is only broken by the wind and the roar of glacial melt.
Mission Directive / X-Factor
“The Kaskawulsh Glacier and the Valley of the Kings. The defining moment is the perspective on the Kaskawulsh Glacier from Observation Mountain: two massive branches of ice merging into a single delta that stretches for miles. The scale is extraordinary. Additionally, the valley floor is well known for frequent grizzly bear activity; hikers exist as guests in their territory, adding a profound sense of awareness to every step. In 2016, the Slim's River dramatically changed course due to glacial retreat—an event often cited as one of the fastest landscape changes recorded in North America—making this trail a living case study in how glaciers shape the land.”
Hazard Assessment
The Slim's River valley is well known for frequent grizzly bear activity.
MITIGATION: Bear-resistant food storage is mandatory and provided by Parks Canada with your permit; carry bear spray in an outside holster at all times; make constant noise (singing/calling) in willow thickets; report all sightings to the visitor centre.
Bullion Creek and Canada Creek can rise rapidly due to glacial melt and heavy rain, becoming potentially deadly.
MITIGATION: Do not attempt to cross Canada Creek in the late afternoon; plan to cross at low water levels in the early morning; use 'unclipped' pack technique; scout for the widest part of the stream channel.
Kluane is remote and weather can drop below freezing even in July. There is zero cell service or infrastructure.
MITIGATION: Register your itinerary with Parks Canada; carry a satellite communicator (InReach); use a weather-resistant tent rated for high winds; be prepared for sub-zero temperatures even in summer.
Critical Loadout
Water Logistics
HIKING
PATHWAY
kluane-national-park-yukon // hiking
Thechàl Dhâl to Bullion Creek
Valley floor walk. Cross the first major creek. Look for Dall sheep on the surrounding cliffs.
Bullion Creek to Canada Creek
Continuing along the river flats to the base camp site at the foot of Observation Mountain.
Observation Mountain Summit
A punishing 1,200m climb. Witness the Kaskawulsh Glacier and return to Canada Creek camp.
The Great Return
Full 22.5km hike back to the trailhead. Often done in one long push to reach civilization.
| Step | Sector / Waypoint | Dist. | Gain (↑m) | Duration | Assessment |
|---|---|---|---|---|---|
| 1 | Thechàl Dhâl to Bullion Creek Valley floor walk. Cross the first major... | 4-6 hours (15 km) | --- | 4-6 hours (15 km) | Standard Segment |
| 2 | Bullion Creek to Canada Creek Continuing along the river flats to the ... | 3-5 hours (7.5 km) | --- | 3-5 hours (7.5 km) | Standard Segment |
| 3 | Observation Mountain Summit A punishing 1,200m climb. Witness the Ka... | 7-9 hours | --- | 7-9 hours | Standard Segment |
| 4 | The Great Return Full 22.5km hike back to the trailhead. ... | 7-9 hours (22.5 km) | --- | 7-9 hours (22.5 km) | Standard Segment |
Technical Specifications
DOC_REF: GOLDEN_HIKING_CA_119Refuge Capacity
Wilderness camping at designated sites (Bullion Creek, Canada Creek). Permits and reservations are mandatory via Parks Canada.
Regulatory
- Permit REQUIRED
- Authority Parks Canada (Kluane)
Mandatory registration at the Thechàl Dhâl Visitor Centre is required for all hikers. For overnight stays, you must obtain a backcountry permit and rent a bear-resistant food canister (usually provided for free by the park with your permit).
Climatology
- OptimalJul, Aug, Sep
Very short window: late June to mid-September. High water levels in early July can make creek crossings impossible.
Emergency / Comms
- Rescue (EU) 112 ACTIVE
- Signal Zero
Compare With Other Hikes
Side-by-side metric analysis. Compare Slim’s River West Trail (Ä’äy Chù West) directly against similar routes ÔÇö distance, elevation gain, HikeMetrics Hazard Score, and more.
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