Hot River
35–45°C
Natural warm bathing river with varying temperatures
Reykjadalur: Hot River & Steam Valley Near Reykjavik
Reykjadalur — "Steam Valley"
Updated February 5, 2026By the Iceland.org Travel Team
A geothermal valley near Hveragerði famous for its hot bathing river — one of Iceland's most popular day hikes from Reykjavík.
Region
South Iceland
Year-round (summer best)
A 3 km hike leads through steaming vents, mud pools, and colorful mineral deposits to a warm river where visitors can bathe year-round. The valley is one of Iceland's most accessible geothermal experiences, located just 45 minutes from Reykjavík near the town of Hveragerði.
Safety + sourcing
Last updated: 2026-02-05
Stay on marked trails — geothermal areas can be dangerously hot. Bring a towel and swimsuit. The trail can be slippery when wet.
Sources to check
Hike Distance
3 km
One way to the bathing area (6 km round trip)
Best Season
Year-round
Summer is most comfortable, winter is magical
From Reykjavik
45 km
About 30 minutes drive to the trailhead
Terrain
Geothermal
Steam vents and bubbling mud pots line the trail up to the bathing river
Tip
Arrive Early
The parking area fills up fast in summer — aim for morning to avoid crowds
Key Highlights
Hot Bathing River
Naturally heated river perfect for soaking after the hike
Steaming Vents
Dramatic steam rising from the geothermal landscape
Mud Pools
Bubbling geothermal mud pools along the trail
Colorful Minerals
Vibrant mineral deposits painting the geothermal landscape
Year-round Access
Enjoyable in all seasons — winter visits offer a unique experience
Near Hveragerði
Gateway town with restaurants, pools, and geothermal greenhouses
How to Get There
- Park at the trailhead in Hveragerði, about 45 km (40 minutes) south of Reykjavik on Route 1
- The hike to the hot river is approximately 3 km each way (1 hour uphill, 45 minutes down)
- Hveragerði has restaurants, a geothermal park, and shops for supplies before the hike
- Public buses run from Reykjavik to Hveragerði (Strætó Route 51) multiple times daily
- Parking at the trailhead can fill up in summer — arrive before 10 AM or after 4 PM
Best Time to Visit
- June-August: Most comfortable hiking weather (10-18°C), long daylight for unhurried bathing
- May and September: Fewer crowds at the hot river, still pleasant hiking conditions
- July: Peak visitor season — expect company at the bathing spots, especially midday
- October-April: Trail can be icy and muddy; bring microspikes and warm layers
- Year-round: The hot river flows in all seasons, but winter hiking requires preparation
Planning help
Reykjadalur FAQs
Quick answers with safety notes where it matters.