Contwoyto Winter Road — Tibbit Lake to Ekati Diamond Mine via the Barren Lands Ice Road
600 km of ice road. The lake beneath you is the road.
The Tibbitt to Contwoyto Winter Road is the longest ice road on Earth, running roughly 600 km northeast from Tibbit Lake near Yellowknife across more than 500 frozen lakes to the Ekati and Diavik diamond mines in the Northwest Territories and Nunavut. This road is built from scratch every winter, typically February through April, over lake ice monitored daily for thickness. The record books show convoys of semi-trucks hauling 10,000-plus loads of fuel and supplies in an eight-week window — the mines depend on it completely. The portage sections between lakes are graded dirt, but most of the route is ice, and you can feel the flex underfoot when a loaded truck passes.
Private passenger vehicle access is restricted — this is an active industrial haul road operated by a joint venture, and permits are required for non-commercial travel. In the right circumstances, with proper cold-weather kit, a satellite communicator, and approval from the road operator, this is one of the most surreal drives on the planet: frozen tundra in every direction, no trees past the treeline, aurora overhead, and the constant knowledge that the road beneath your wheels is melting back into a lake in six weeks. Temperatures routinely hit -40°C. This is not a trail to improvise.
Trail Specs
| Difficulty | Expert |
|---|---|
| Trail Type | Backcountry, Overland Route |
| Surface | Mixed |
| Features | Historic, Remote, Scenic |
| Length (miles) | 373 mi / 600 km |
| Duration | 3-5 days |
| Max elevation (ft) | 1500 ft |
| Best season | February-April |
| Minimum vehicle | Approved commercial or permitted private 4WD with full cold-weather survival kit |
| Nearest town | Yellowknife, Northwest Territories |
| Land manager | Lupin Ice Road Ltd. / Government of Northwest Territories / Nunavut |
| Permit required | Yes |
| Cell service | None |
| Water crossings | No |
| Dispersed camping | No |
| Official sources | GNWT Winter Roads TCWR Official Road Info |
| Start coordinates | |
| End coordinates | |
| Copy both for Google Maps directionsClick to copy the directions URL · or open it directly in a new tab | |
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Location
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Frequently asked questions
Can a stock truck or SUV drive the Contwoyto Winter Road, or is this commercial-only?
Private vehicles are technically permitted but face strict requirements: approved 4WD, full cold-weather survival kit, communication equipment (satellite phone or PLB), and prior authorization from the road operator. A stock pickup with factory gear is not adequate — you need redundant survival systems because a breakdown here is a life-threatening situation, not an inconvenience.
How long is the Contwoyto Winter Road actually open each year?
The road typically opens in February and closes in late March or early April, depending on ice thickness and spring melt. The operating window is roughly 6–10 weeks, and it varies year to year — some seasons it never opens at all if temperatures don't cooperate. Check current status directly with GNWT Winter Roads before making any plans.
Do you need a permit to drive the Contwoyto Winter Road, and who issues it?
Yes. Private vehicle access requires authorization from Lupin Ice Road Ltd., the operator managing the road on behalf of the mining companies. This is not a public recreational road — it exists to haul industrial freight to the mines, and private access is granted on a controlled, case-by-case basis. Contact GNWT and the operator well in advance.
What's the most dangerous section of the route and what makes it gnarly?
The lake crossings are the consistent danger — you are driving on frozen water for the majority of 600 km, and ice thickness is actively monitored throughout the season. Pressure cracks, overflow (water on top of ice), and deteriorating conditions near the end of season are the primary threats. Speed limits on ice sections are strictly enforced because vehicle wake-effect can fracture ice, and stopping in the middle of a long lake crossing is genuinely dangerous.
Is there any fuel, food, or shelter available along the route, or do you carry everything?
There are no public fuel stops, restaurants, or lodging along the 600 km route — the road serves industrial operations, not travelers. You carry all fuel, food, water, and shelter for the full trip plus emergency reserves. Most private expeditions run dual tanks or jerry cans and plan for 5+ days of self-sufficiency in temperatures that can drop below -40°C.
Trail track
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