Nahanni Range Road South — Watson Lake to Flat Lakes Basin
Selwyn Mountains solitude — earn every kilometre.
Watson Lake is the jumping-off point and the last place you’ll see pavement for a long time. The Nahanni Range Road punches north from the Alaska Highway near here, but the southern approach into the Flat Lakes Basin is the section that filters the casual trucks from the serious rigs. You’re crossing the Liard River drainage, threading through black spruce muskeg, and climbing into the Selwyn Mountains — one of the most isolated ranges in North America. The Flat Lakes sit in a high basin that was prospected for tungsten and base metals for decades. Evidence of that history is scattered across the landscape. River crossings are real here — expect at least three unbridged fords of creek tributaries that can run thigh-deep in early season.
Do not run this solo and do not run it without a snatch block, high-lift jack, and a full-size spare. A capable built rig — lifted, lockers, all-terrain or mud tires — is the minimum. This is not a trail for stock vehicles regardless of how confident you feel in Watson Lake. Fuel range from Watson Lake must cover at least 200 km round trip before any resupply. Cell service ends before you leave town. Best window is late June through August. The payoff is absolute solitude in mountain country that sees fewer visitors per year than most people have in their contact list.
Trail Specs
| Difficulty | Expert |
|---|---|
| Trail Type | Backcountry, Overland Route, Technical 4x4 |
| Surface | Dirt, Gravel, Mixed |
| Features | Camping, Historic, Remote, Water Crossings |
| Length (miles) | 68 mi / 110 km |
| Duration | 2–3 days |
| Max elevation (ft) | 5400 ft |
| Best season | Late June–August |
| Minimum vehicle | Built 4WD with lockers |
| Nearest town | Watson Lake, YT |
| Land manager | Yukon Government – Energy, Mines and Resources |
| Permit required | No |
| Cell service | None |
| Water crossings | Yes |
| Dispersed camping | Yes |
| Official sources | yukon.ca |
| Start coordinates | |
| End coordinates | |
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Location
Trail Conditions
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Frequently asked questions
Can a lifted 4Runner or stock Tacoma handle this trail?
No. This route demands a purpose-built 4WD with lockers, high clearance, and serious recovery gear — a stock or mildly lifted rig will get into trouble on the creek crossings and washed-out sections. Skid plates are essential, and a snorkel is strongly recommended given the water depth variability.
When does the Nahanni Range Road South actually open and close each year?
Late June through August is the reliable window — spring runoff keeps crossings dangerously high into early June, and early snow can shut sections down by September. Conditions vary year to year, so check with Yukon Energy, Mines and Resources before you leave Watson Lake.
Do you need a permit or are there any fees to drive this route?
No permit or fee is required to drive the Nahanni Range Road, but sections cross active and historic mining tenure — respect any posted access restrictions around claim areas. The road is maintained by the Yukon government as a resource access route, not a recreational facility.
What's the hardest section and what should I actually expect?
The creek crossings approaching Flat Lakes Basin are the crux — multiple unbridged fords with rocky bottoms and current that changes with recent rainfall, some approaching axle-deep on a full-size rig. Add in extended stretches of shelf road, loose shale climbs, and zero help within range, and a single mechanical failure can turn into a multi-day situation.
Is there any place to top up fuel between Watson Lake and the end of the route?
No — Watson Lake is your last fuel stop, full stop. The 110 km route has zero services, and the driving conditions (4WD, slow speeds, creek crossings) will burn fuel faster than highway figures. Carry enough for at least 250–300 km of range to leave yourself a real safety margin for a turnaround or detour.
Trail track
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