Night Hike to Reykjadalur Hot River: Private Northern Lights Experience from Reykjavík
Difficulty
easy
Duration
4 hours
Fitness Level
Suitable for people with basic fitness; you should be comfortable walking 6 km over uneven ground and short climbs.
Overview
Head into Reykjadalur after dark for a private night hike that ends with a soak in a naturally heated river beneath aurora-studded skies. This guided 6 km, 4-hour experience combines geothermal wonder with prime Northern Lights viewing close to Reykjavík.
Night Hike to Reykjadalur Hot River: Private Northern Lights Experience from Reykjavík
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A thin ribbon of steam threads its way up the valley as you step off the gravel parking lot and into the dark. Your headlamp cuts a narrow cone of light through cold air that smells faintly of sulfur and wet earth. The trail climbs steadily, a 6 km route that gains about 330 m in elevation, and the world behind Hveragerði quickly shrinks to a smear of distant lights. Above, the sky is a black bowl—perfect for aurora hunting—and the valley ahead seems to breathe, heated pockets of earth sighing steam into the night.
Adventure Photos
Adventure Tips
Layer for variable conditions
Temperatures can drop sharply at night; wear moisture-wicking base layers, an insulating midlayer, and a waterproof shell.
Waterproof footwear
The trail has muddy and uneven sections—sturdy, waterproof hiking boots make the climb and return much more comfortable.
Bring a dry change of clothes
After bathing in the hot river, a complete dry set of clothes prevents hypothermia and keeps the drive back pleasant.
Protect the environment
Stay on maintained paths and do not add soaps or shampoos to the hot river; pack out all trash.
Local Insights
Wildlife
- Arctic fox (rare, nocturnal)
- Various upland birds such as ptarmigan and migrating plovers
History
Hveragerði developed around geothermal activity; residents historically used ground heat for greenhouses and bathing, creating a community shaped by steam and soil.
Conservation
The valley’s moss and soil are fragile; stay on the marked path, avoid disturbing thermal features, and pack out all waste to protect the delicate ecosystem.
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Adventure Hotspots in Hveragerði
Frequently Asked Questions
Recommended Gear
Headlamp
Guides provide headlamps but a personal light with fresh batteries improves visibility and safety.
Waterproof hiking boots
Keeps feet dry and stable on muddy, volcanic terrain.
Insulated waterproof jacket
Protects against wind and the sharp drop in temperature after sunset.
winter specific
Swimwear and quick-dry towel
Bring a swimsuit and towel for the hot river; quick-dry fabric is best for the ride home.
summer specific