Reykjadalur
The Famous Hot River Hike
Reykjadalur, meaning "Steam Valley," offers one of Iceland's most unique experiences — hiking through a geothermal wonderland to bathe in a naturally heated river surrounded by steaming hot springs and fumaroles.
About Reykjadalur
Reykjadalur offers something truly unique in Iceland: the chance to bathe in a naturally heated river flowing through a geothermal valley. Hot water seeps up from underground and mixes with cold river water, creating comfortable bathing temperatures along stretches of the riverbed.
Wooden boardwalks and changing screens have been installed to protect the fragile landscape while providing visitors with basic facilities in this otherwise wild setting.
- Name means "Steam Valley" or "Smoke Valley"
- Active geothermal area with dozens of hot springs
- Steaming fumaroles throughout the valley
- Part of the Hengill volcanic system
- Near Hveragerði town, South Iceland
- Free natural hot spring experience
The Hike to Paradise
The journey is as spectacular as the destination — a moderate 3.2km hike through ever-changing geothermal landscapes.
The trail begins at Dalakot parking area in Hveragerði. At 1km, the first hot springs and fumaroles appear. At 2km, panoramic views open up over the entire valley. At 3.2km, you arrive at the famous bathing spots along the naturally heated river.
- Distance: 3.2km one way (6.4km round trip)
- Elevation gain: 200m
- Difficulty: Moderate
- Time: 1–1.5 hours each way
- Well-marked wooden boardwalks in sensitive areas
- Rocky and muddy sections — can be slippery when wet
- Open year-round, winter requires extra care
The Famous Hot River
The river has natural temperature gradients created by hot spring inflows, with multiple natural pools and sections perfect for soaking and swimming.
- Warmest spots: 38–40°C (100–104°F)
- Comfortable bathing: 35–38°C (95–100°F)
- Cooler areas: 30–35°C (86–95°F)
- Natural rock and gravel bottom
- Varying depths from shallow to swimming
- Incredible mountain views while bathing
Planning Your Visit
Drive to Hveragerði (45 min from Reykjavík) and park at Dalakot parking area (small fee). Bus connections to Hveragerði are also available.
Hveragerði town offers restaurants, shops, and accommodation. Nearby attractions include geothermal greenhouse tours, the Earthquake Exhibition, and Gufudalur hot springs.
- Essential: swimwear, towel, water
- Clothing: waterproof jacket, good hiking boots
- Optional: waterproof bag, snacks, camera
- Winter extra: warm clothes, ice grips for boots
- Early morning: fewer crowds, peaceful experience
- Winter: snow-covered landscapes, Northern Lights possible
Safety Information
Always test water temperature before entering — some spots can be scalding hot. Use designated changing areas and respect others' privacy. Pack out all trash and respect the natural environment. Conditions can change rapidly — be prepared for rain or snow.