Iceland has hundreds of geothermal pools, and the difference between a great hot spring day and a wasted afternoon usually comes down to one thing: whether your rental car can actually get you there. Some of the best pools sit at the end of gravel tracks, river fords or mountain roads that a small 2WD simply should not attempt.
The two categories: 2WD-friendly and 4x4-only
Iceland classifies mountain roads with an F prefix. Driving an F-road in a 2WD is illegal, voids your insurance and is the single most common way visitors turn a holiday into a repair bill. But plenty of excellent hot springs need no F-road at all.
| Hot spring | Access | Vehicle needed | Cost 2026 |
|---|---|---|---|
| Sky Lagoon, Reykjavik | Paved | Any car | from 12,990 ISK |
| Blue Lagoon, Grindavik | Paved | Any car | from 12,000 ISK |
| Hvammsvik, Hvalfjordur | Paved | Any car | from 8,900 ISK |
| Secret Lagoon, Fludir | Paved | Any car | from 4,500 ISK |
| Myvatn Nature Baths | Paved | Any car | from 6,900 ISK |
| GeoSea, Husavik | Paved | Any car | from 6,500 ISK |
| Reykjadalur (hike-in) | Paved to car park + 3 km hike | Any car | Free |
| Hrunalaug, near Fludir | Short rough gravel | 2WD in summer, 4x4 better | Small landowner fee |
| Seljavallalaug, south coast | Gravel spur + 20 min walk | Higher clearance advised | Free |
| Landmannalaugar | F208 / F225 | 4x4 mandatory | Free pool, paid parking |
| Hveravellir, Kjolur | F35 | 4x4 mandatory | Small fee |
| Laugavallalaug, east highlands | F-road + ford | 4x4 mandatory | Free |
Reykjadalur — the hot river everyone should do
Forty minutes from Reykjavik, above the town of Hveragerdi, a whole river runs at bathing temperature. You park at the marked car park, walk 3 km uphill through a steaming valley — about 45 to 60 minutes — and then choose your spot along the river, where the water gets hotter the further upstream you go.
The access road is paved and any rental car manages it. The hike is not difficult but it is muddy, exposed and genuinely cold on the walk back if you have not brought a towel and a warm layer. There are wooden boardwalks and changing screens but no other facilities.
Best in summer and early autumn. In deep winter the path ices over and the walk becomes a different proposition entirely.
Hvammsvik — the newest one worth the drive
Hvammsvik in Hvalfjordur opened recently and has quietly become the best value of the premium lagoons. Eight natural pools sit at the edge of the fjord, some of them partly flooded by the tide, and the setting is a working farm rather than a tourist complex.
It is 45 minutes from Reykjavik on paved roads, which makes it an easy first or last stop on a Ring Road trip. Booking ahead is required and admission is meaningfully cheaper than the Blue Lagoon.
Seljavallalaug and Hrunalaug — the in-between pools
Seljavallalaug is a 25-metre pool built into a hillside in 1923, tucked in a valley off the south coast near Skogar. The turn-off from Route 1 leads onto a gravel road, then a 15 to 20 minute walk along a river. In summer a careful 2WD driver manages the gravel; after rain or in shoulder season, higher clearance makes a real difference. The pool is free, unheated beyond its natural source, and cleaned only occasionally — expect algae and a lukewarm temperature.
Hrunalaug near Fludir is a tiny stone-walled pool on private farmland. The owner asks for a small fee, and the etiquette here matters more than anywhere: it holds maybe six people, so if it is full, come back later rather than crowding in.
The 4x4-only springs
Three pools reward the effort of a proper highland vehicle. Landmannalaugar, reached on F208 or F225, has a natural warm stream at the base of rhyolite mountains and is the classic Icelandic highland bathe. Hveravellir sits halfway across the Kjolur route on F35, an isolated geothermal field with a small hot pool and a mountain hut. Laugavallalaug in the eastern highlands has a rare feature — a hot waterfall you can stand under — but requires an F-road and a river ford.
All three are summer-only, roughly late June to early September depending on snowmelt, and all require a 4x4 by law. River fords are never covered by rental insurance in Iceland, so cross only when you can see the bottom and the depth is clearly within the vehicle limit. Our F-roads guide explains the rules and the vehicle requirements in full.
Hot spring etiquette in Iceland
One rule matters more than all the others: you must shower naked with soap, before putting on your swimsuit, in every public pool and geothermal spa in Iceland. This is not a suggestion. Icelandic pools use very little chlorine precisely because everyone showers properly, and staff will send you back if you skip it.
At wild pools there are usually no showers, so the etiquette shifts to leave no trace: no soap or shampoo in natural water, take all rubbish out, do not park on the verge blocking farm access, and keep noise down. Several wild springs have been closed by landowners after visitors abused them.
Planning a hot spring road trip
A practical three-day loop from Keflavik: day one, Sky Lagoon or Hvammsvik on arrival. Day two, the Golden Circle with the Secret Lagoon at Fludir and a detour to Hrunalaug. Day three, the south coast with Seljavallalaug, or Reykjadalur on the way back if the weather is clear.
If you have a week and are travelling between late June and early September in a 4x4, add Landmannalaugar as an overnight — it is the one that people remember years later.
What to pack in the car
A quick-dry towel, flip flops for hot gravel and cold changing rooms, a dry bag for wet swimwear, and a small plastic bag for wet clothes so the car does not smell for the rest of the trip. In winter, a thermos and a change of dry socks. Aurora Car Rental Iceland vehicles include free WiFi and GPS, which makes finding the less-signposted pools considerably easier.
Choosing the car for a hot spring trip is straightforward: paved-access pools only, a 2WD such as the SsangYong Tivoli from 12,000 ISK per day is fine. Anything involving gravel spurs or highland F-roads, take a 4x4 — Dacia Duster, Kia Sportage or SsangYong Korando. See our our cars page for the full fleet, and note that all vehicles are unavailable from 10 to 15 August 2026.
Frequently asked questions
Which Iceland hot springs are free?
Reykjadalur hot river, Seljavallalaug, Laugavallalaug and the natural pool at Landmannalaugar are all free to bathe in, though some have paid parking. Hrunalaug asks a small fee to the landowner. The developed lagoons — Blue Lagoon, Sky Lagoon, Hvammsvik, Secret Lagoon, Myvatn Nature Baths — all charge admission.
Can I reach hot springs without a 4x4?
Yes. Sky Lagoon, Blue Lagoon, Hvammsvik, the Secret Lagoon, Myvatn Nature Baths, GeoSea and the Reykjadalur trailhead all have fully paved access. Only the highland pools such as Landmannalaugar, Hveravellir and Laugavallalaug legally require a 4x4.
Do I really have to shower naked before entering?
Yes. Showering naked with soap before putting on a swimsuit is mandatory in every public pool and geothermal spa in Iceland, and it is strictly enforced. Icelandic pools use minimal chlorine because of this rule.
Is Reykjadalur worth the hike?
For most people, yes. It is a 3 km uphill walk of 45 to 60 minutes each way to bathe in a naturally hot river, and it is free. Bring a towel, warm layers for the walk back, and avoid it in icy winter conditions.
When are the highland hot springs open?
Roughly late June to early September, depending on the snowmelt each year. F-roads open on official dates published by the Icelandic Road Administration and close again with the first serious snow, usually in September.
Are river crossings covered by rental insurance?
No. Water damage from river fording is excluded from every rental insurance policy in Iceland, including ours. If you ford a river you carry the full cost of any damage, so cross only shallow, clearly visible fords in a proper 4x4.
Chase hot springs with the right car
4x4 rentals from Keflavik with insurance, WiFi, GPS and free airport transfer included. No deposit — pay cash on pickup.
Aurora Car Rental Iceland — Suðurbraut 890, 262 Keflavík | WhatsApp: +48 729 854 633 | carrentalaurora@gmail.com
