Iceland's highland interior is one of the few genuinely wild places in Europe. The F-roads that access it are unmaintained volcanic tracks open only in summer — typically late June to mid-September, depending on the year's snowmelt — and closed to everything except capable 4WD vehicles by law. Attempting them in a 2WD vehicle is illegal and results in substantial fines. Attempting them in an inadequate 4WD results in vehicles abandoned mid-river crossing, recovered by the Icelandic emergency services, and significant repair bills. Attempting them in a proper Super Jeep with a guide who checks the river gauges each morning results in one of the most extraordinary landscape experiences available anywhere in Europe. The distinction between these outcomes is vehicle and guide selection.
What an F-road actually is — and what it demands
The letter 'F' designates any road classified as a mountain road by Icelandic authorities. There are approximately 30 F-roads in Iceland's interior, ranging from the relatively straightforward F208 northern approach to Landmannalaugar to the extreme F249 to Þórsmörk, which requires crossing the Krossá glacial river — one of Iceland's most unpredictable watercourses, varying from knee-deep to vehicle-swallowing over the course of a day depending on glacial melt rate, upstream temperature, and rainfall. The Krossá crossing has collected more tourist vehicles than any other river in the highlands; local Super Jeep operators check the depth gauge at the crossing before every departure.
The standard F-road vehicle requirements in practice: minimum 31-inch tyres with appropriate off-road profile; high ground clearance (standard SUVs typically insufficient for the larger river crossings); snorkel or high air intake position for deep crossings; front and rear diff-locks or very capable electronic traction management; and the ability to lower tyre pressure for soft volcanic sand and reinflate afterward. A modified Land Cruiser or Defender with 35-inch tyres, a snorkel, raised suspension, and a competent driver handles the full F-road network. A standard rental Dacia Duster with 30-inch all-seasons handles the F208 northern approach to Landmannalaugar in good conditions and nothing more than that.
The destinations worth the vehicle requirement
Landmannalaugar
The most visited highland destination and the starting point for the Laugavegur trail — Iceland's most popular multi-day hike. The rhyolite mountains around Landmannalaugar are genuinely extraordinary: banded red, yellow, green, and grey from different mineral compositions, with steam rising from geothermal vents and a natural hot spring pool set against a lava field created in an eruption approximately 550 years ago. Via the northern F208 approach, a capable 4WD gets here; the southern F208 approach involves the more dramatic landscape and more serious river crossings. The Super Jeep tour operators run day trips from Reykjavik and Hella — Tröll Expeditions and several smaller specialist operators — and the guided experience is qualitatively better than self-drive for most visitors because the guide knows which tracks to take, where the best views are off the marked routes, and when river conditions are safe.
Þórsmörk (Thor's Valley)
Nested between three glaciers — Mýrdalsjökull, Eyjafjallajökull, and Tindfjallajökull — Þórsmörk is a forested valley that has no business existing in the Icelandic interior and is extraordinary precisely because of that. The approach via F249 requires the Krossá crossing; a private Super Jeep guide is not optional for visitors without genuine expedition 4WD experience. The valley itself offers multi-hour hikes with views across the glacier tongues and down to the coastal plain, and an atmosphere — birch forest, birdsong, wildflowers — that is unlike anything else in Iceland's highland interior.
Askja caldera
The approach via F88 crosses the lunar landscape of the Ódáðahraun lava field — a terrain so alien that NASA used it to train Apollo astronauts in the 1960s. The caldera contains Lake Öskjuvatn (Iceland's deepest lake, at 220 metres) and the smaller Víti crater — a geothermal explosion crater with milky-blue warm water that visitors can swim in when open. The F88 involves crossing the Lindaá river, which is manageable in a capable 4WD in good conditions and challenging in wet conditions. The remote location — 250km from Reykjavik — makes this the least visited of the three major highland destinations and the most rewarding for that reason.
Sprengisandur (F26) — the crossing
The Sprengisandur route is the longest and most remote F-road in Iceland — a 300km traverse of the central desert between the Hofsjökull and Vatnajökull glaciers, through terrain so barren and flat that the horizon disappears. It requires a high-clearance 4WD, supplementary fuel (no services for the full crossing), and genuine comfort with remote navigation. The crossing is not technically demanding by Kaokoveld standards but the remoteness — a breakdown here involves a wait measured in hours, not minutes — requires appropriate preparation and communication equipment.
The tyre specification that determines access: The difference between a standard 4WD rental and a Super Jeep in Iceland is primarily tyre size. The Off to Iceland guide for 2026 is direct: 33-inch tyres are adequate for gateway F-roads like the northern Landmannalaugar approach; 35-inch tyres are necessary for Þórsmörk, Askja in soft conditions, and any route requiring deep river crossings. A 35-inch tyre raises the air intake point, increases ground clearance, and allows lower inflation pressure for soft volcanic sand — the combination that keeps vehicles moving where others stop. Do not assume that any rental described as "4x4" or even "Super Jeep" meets this standard — check the actual tyre size before booking.
Guided vs self-drive: the honest answer
For the straightforward highland routes — F208 north to Landmannalaugar, F35 (Kjölur, a graded highland road) — a competent driver in an appropriate rental 4WD is a reasonable approach if they are reading current road conditions on vegagerdin.is (the Icelandic Road Administration website) before each day's driving. The Kjölur route (F35) is actually a graded highland road rather than a true F-road — passable in a capable 4WD without specialist modification.
For Þórsmörk, the southern F208 approach, and any route involving the Krossá river or similar large glacial crossings: a local Super Jeep guide is not a luxury. The river levels at these crossings are not predictable from a map or a previous visitor's report — they are a function of that morning's temperature upstream, the previous night's rainfall, and real-time glacial melt rate. A local guide checks the gauge, knows the crossing point, and has local emergency contacts. That knowledge is worth the daily rate.
Private Super Jeep tours — a single vehicle, your group only, a bespoke route — are available from several Reykjavik-based operators for around £500–900 per day depending on vehicle size and route complexity. For a group of four to six, this is competitive with mid-range day tours and buys complete route flexibility. Southcoast Adventure and several smaller operators specifically offer bespoke private F-road itineraries covering destinations that group tours do not reach.
Getting to Iceland for a highland expedition
Reykjavik Keflavik International Airport is the obvious arrival point. For highland expeditions departing from the south coast (Hella, Vik), private transfer or collecting a rental vehicle in Reykjavik and driving south takes 1.5–2 hours. Private jet to Reykjavik is straightforward on most European-range aircraft.
Charter to Reykjavik via VilliersFrequently asked questions
When exactly do the F-roads open each year?
The opening dates vary by year and by specific road. The highland interior roads typically open between late June and mid-July, depending on snowmelt and the severity of the preceding winter. The Icelandic Road Administration (vegagerdin.is) publishes real-time road opening and closure status for every F-road in the country. This is the only authoritative source — no other information, including information from tour operators, should be taken as definitive. Some years the Landmannalaugar approach opens in mid-June; in heavy snow years it may not be passable until early July. Super Jeep operators can sometimes access routes before they are officially open to the public, which is a significant advantage of the guided approach.
What is the insurance situation for F-road driving in rental vehicles?
Standard rental car insurance in Iceland explicitly excludes damage caused by river crossings, volcanic ash, sand and gravel blasting, and damage to the undercarriage — the precise damage types most likely on F-roads. Third-party insurer RentalCover (not available to US residents) offers coverage including undercarriage and sand damage. The alternative is the rental company's own premium excess reduction package. The important point is to read the exclusions list before signing, not after. Sand and river damage to a rental 4WD can easily exceed €5,000.
Can I visit Landmannalaugar as a day trip from Reykjavik?
Yes — Landmannalaugar is approximately 180km from Reykjavik and accessible as a long day trip via guided Super Jeep tour (typically 11–13 hours) or via the highland bus service that runs in summer from Reykjavik and Hella. Tröll Expeditions runs a well-reviewed day Super Jeep tour from Reykjavik with a small-group format (custom-modified 4WD truck) that includes Landmannalaugar, Háifoss waterfall, and Hnausapollur volcanic crater. The highland bus is the lowest-cost option but significantly slower and with less flexibility on stops.
Is camping in the Icelandic highlands permitted?
Wild camping outside designated campsites is regulated in Iceland. In the highland interior, camping is generally permitted at designated mountain hut sites (the Ferðafélag Íslands hut network) and official campgrounds. Wild camping away from designated areas in sensitive highland terrain is discouraged and in some areas prohibited. The mountain huts require advance booking — the Landmannalaugar hut in particular fills months in advance for peak season dates. Outside the huts, camping grounds in the interior are basic: expect minimal facilities and extraordinary setting.
F-road opening dates, river crossing conditions, and rental insurance terms change annually and are subject to conditions. Always check vegagerdin.is for current road status before any highland driving. Guided tour prices are indicative for 2026. This article contains affiliate links — bookings through our Villiers link may earn a commission.