How do I get to Þórsmörk?

Þórsmörk is reached via F-249, a rough highland road with multiple river crossings that require a large 4WD vehicle (super jeep or modified bus). Scheduled buses run from Reykjavík in summer (Trex, Reykjavík Excursions). Do not attempt the river crossings in a standard rental car; vehicles are regularly swept away in the glacial rivers.

Can I camp in Þórsmörk?

Yes, there are campsites at Básar (operated by Útivist) and Húsadalur (operated by Volcano Huts). Both have basic facilities including toilets and cold water. Volcano Huts also offers sleeping bag accommodation and glamping. Book in advance during peak season. Wild camping is not permitted in the valley.

Is Þórsmörk connected to other trails?

Yes, Þórsmörk is the southern terminus of the Laugavegur Trail from Landmannalaugar and the northern terminus of the Fimmvörðuháls trail from Skógafoss. Many hikers use Þórsmörk as a base for day hikes or as a transit point on longer treks.

Are the river crossings to Þórsmörk dangerous?

Yes. The glacial rivers on the F-249 are among the most dangerous road river crossings in Iceland. Water levels change rapidly with weather and time of day. Multiple vehicles are lost to the rivers each year. Unless you are in a dedicated super jeep, take the scheduled bus; the drivers know the crossings well.

Þórsmörk Trails: Valley Between Glaciers

Valley between three glaciers in South Iceland

Last reviewed March 3, 2026By the Iceland.org Travel TeamEditorial policy

Difficulty

Easy–Moderate

Multiple day hikes · Summer only · South Iceland

Þórsmörk (Valley of Thor) is a sheltered highland valley surrounded by three glaciers: Eyjafjallajökull, Mýrdalsjökull, and Tindfjallajökull. The sheltered position gives it a mild microclimate that supports dense birch forest, wildflower meadows, and moss-covered hillsides, in sharp contrast to the bare glacial outwash plains around it. A network of day hikes covers canyons, ridge viewpoints, and riverside trails, and many hikers base themselves here for several days.

Sources and last reviewed

Last reviewed: 2026-03-03

Do not attempt to drive to Þórsmörk without a proper super jeep. The river crossings on F-249 have claimed numerous vehicles. Take the scheduled bus if you are not experienced in Icelandic highland driving.

Pages are reviewed for practical usefulness, source quality, and volatile claims before publication.

Official sources to check

Trail network

50+ km

Day hikes ranging from 3 km to 20 km

Elevation range

200–1,000 m

Valley floor to ridge summits

Duration range

1–8 hours

Short forest walks to full-day ridge hikes

What to Expect

Trail network and distances

50+ km of trails with day hikes ranging from 3 km (Stakkholtsgjá canyon) to 20 km (Tindfjöll ridge). Elevation range from 200m (valley floor) to 1,000m (ridge summits). Difficulty ranges from easy forest walks to hard exposed ridges.

Stakkholtsgjá canyon (3 km)

A narrow slot canyon with towering walls narrowing to a waterfall and pool. The walk involves wading through shallow water (10-20cm deep); waterproof boots essential. Allow 1.5 hours. No elevation gain.

Valahnúkur viewpoint (5 km, 350m gain)

A moderate 2-3 hour hike up a prominent peak with 360-degree views of the three surrounding glaciers, the braided Krossá river, and the entire Þórsmörk valley. The best short hike in the valley.

Terrain and water crossings

Valley floor trails are easy with some mud. Canyon hikes involve wading. Ridge hikes have exposed scree and loose rock. Small stream crossings on some trails; waterproof boots recommended for all hikes.

Birch forests and wildflowers

Þórsmörk contains some of Iceland's densest native birch woodland. In July-August, the valley floor fills with wood cranesbill, northern green orchid, and dozens of other wildflower species.

Krossá river braids

The glacial Krossá river spreads across the valley floor in an ever-changing pattern of milky blue-white channels against dark sand. Best viewed from the Valahnúkur summit or helicopter tours.

Getting There

Þórsmörk is located approximately 150 km east of Reykjavík but is only accessible via F-249, which involves crossing several unbridged glacial rivers including the dangerous Krossá. Scheduled highland buses depart from BSI terminal in Reykjavík daily in summer (Trex, Reykjavík Excursions), taking 3-4 hours; this is the recommended option for most visitors. Some tour operators offer guided day trips combining the bus ride with hiking. If driving, you need a super jeep with very high clearance (minimum 35" tires); standard 4WD rental cars are not sufficient and insurance will not cover river crossing damage. There is no mobile phone coverage in the valley. Fuel up in Hella or Hvolsvöllur before the F-road turnoff.

Best Time to Hike

June through September is the hiking season. Mid-June: Bus service begins; higher trails may retain snow; river crossings on F-249 are swollen with snowmelt; only super jeeps and buses attempt them. July: Peak season with the warmest weather (10-16°C), most wildflowers, and up to 21 hours of daylight; busiest at the campsites. August: Good conditions continue; berry season in the birch forest; river levels typically at their lowest. September: Autumn colors in the birch forests (golden foliage against glacier backdrops); cooler temperatures (4-10°C); shorter days; bus service ends mid-month. October–May: The valley is completely inaccessible as the glacial rivers become too dangerous and F-249 closes.

Planning help

Þórsmörk FAQs

Quick answers with safety notes where it matters.

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