Kaldidalur Highland Track
Medieval glacier pass between Langjökull and Ok
The Kaldidalur route cuts between Langjökull and Ok glaciers through what translates to “Cold Valley” — Iceland’s oldest documented mountain pass used since medieval times. This 40-kilometer highland track connects the Húsafell area in the west to Þingvellir National Park in the south, crossing the Central Highland plateau at 600 meters elevation through stark volcanic desert punctuated by glacier views. The route passes the ruins of Sturlunga-era shelters and offers direct access to Langjökull glacier’s southern terminus.
Moderate difficulty requiring high-clearance 4WD for loose volcanic gravel and potential water crossings during snowmelt. Best accessed June through September when highland roads officially open, though early season can mean river fords and lingering snow patches. No fuel or services exist on the route — carry extra fuel and emergency supplies. The payoff is raw highland solitude, glacier proximity, and driving one of Iceland’s most historically significant mountain crossings without the crowds of more popular F-roads.
Trail Specs
| Difficulty | Moderate |
|---|---|
| Trail Type | Overland Route |
| Surface | Gravel |
| Features | High Altitude, Historic, Remote, Scenic |
| Length (miles) | 25 mi / 40 km |
| Duration | Half day |
| Max elevation (ft) | 1970 ft |
| Best season | June-September |
| Minimum vehicle | High-clearance 4WD |
| Nearest town | Húsafell, Iceland |
| Land manager | Icelandic Road Administration |
| Permit required | No |
| Cell service | None |
| Water crossings | Yes |
| Dispersed camping | Yes |
| Official sources | road.is |
| Start coordinates | |
| End coordinates | |
| Copy both for Google Maps directionsClick to copy the directions URL · or open it directly in a new tab | |
| Find on Google | Search on Google → |
Location
Trail Conditions
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Frequently asked questions
Can a stock Hilux or Land Cruiser handle Kaldidalur without modifications?
Yes. Stock high-clearance 4WD rigs handle this route fine in good summer conditions. The gravel track is rougher than a highway but not technical — a lifted Hilux, Land Cruiser 70/80/200, or equivalent Defender is ideal. Low-clearance rentals and 2WD vehicles will struggle or bottom out on the rougher sections.
When does Kaldidalur open and close each year?
Typically open June through September, sometimes into early October depending on snowfall. The route sits above 1,900 ft and sits between two glaciers, so early-season snow and ice can linger into June and return fast in autumn. Check current road status at road.is before you leave — conditions change overnight.
Do you need a permit to drive Kaldidalur?
No permit required. The route is managed by the Icelandic Road Administration and is open to the public during its seasonal window. No fees, no booking system. Just check road.is for the official open/closed status before heading out.
What's the hardest section of the trail and what should I expect?
The water crossings are the crux — shallow but present, and flow levels vary with glacial melt and recent rainfall. The highest section near the pass can be rocky and exposed with soft shoulders. Nothing technically extreme, but if conditions turn or a crossing is running high, it demands respect — especially solo.
Is there any gas or resupply between Húsafell and the southern end near Þingvallavatn?
No. Zero services on the 25-mile route. Fill up in Húsafell or Borgarnes before you start. The route runs remote between Langjökull and Ok with no stations, no shops, and no cell service — carry extra fuel if your rig drinks on rough terrain.
Trail track
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