4.5
(96)
2,022
hikers
44
hikes
Hiking in Kaldárhraun Og Gjárnar offers exploration through a protected natural monument characterized by distinctive volcanic landscapes and geological features. The area features rugged terrain, well-preserved pahoehoe lava formations, and geological fissures. Prominent volcanic peaks such as Helgafell and Búrfell define the skyline, with Helgafell reaching 338 meters. The landscape also includes the Búrfellsgjá lava channel and crater, providing unique geological points of interest.
Last updated: July 9, 2026
6
hikers
5.85km
01:39
110m
110m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.5
(2)
17
hikers
Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.

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15
hikers
3.45km
00:55
30m
30m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
14
hikers
14.0km
03:44
150m
150m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
5
hikers
7.25km
01:57
90m
90m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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There are more trails to explore around and you can use this as a starting point. Beautiful.
3
0
Beautiful hike or run. whichever you do, you wont be sorry - it is gorgeous.
3
0
This is a great starting point to explore Reykjanesfólkvangur and it's endless moss fields. Climb the crater to enjoy to the beauty of Icelandic landscapes. Run down the Volcano lava tunnel and more...
2
1
The ascent to Búrfell crater start here. Easy for hikers, but climbing with a bicycle without putting a foot down is a challenge!
0
0
This is a great place to start for a walk in almost any direction. So many options from here.
4
1
There are over 45 diverse hiking trails accessible from bus stations in Kaldárhraun Og Gjárnar, offering a range of experiences from easy strolls to more challenging ascents.
The area is highly rated by the komoot community, with an average score of 4.5 stars. Reviewers often praise the unique volcanic scenery, the well-preserved pahoehoe lava formations, and the opportunity to explore geological wonders like fissures and craters.
Yes, Kaldárhraun Og Gjárnar offers many easy trails perfect for beginners and families. For example, the Ástjörn og Ásfjall – Ástjörn loop from Hafnarfjordur is a gentle 3.5 km route with minimal elevation gain, ideal for a relaxed outing.
Absolutely. Many of the trails are designed as loops, allowing you to start and end your hike at the same bus station. An example is the Ásfjall – Ástjörn loop from Skarðshlíð, which offers a scenic 5.8 km circular walk.
Kaldárhraun Og Gjárnar is renowned for its distinctive volcanic landscapes. You'll encounter rugged terrain, well-preserved pahoehoe lava formations (smooth, rope-like lava), and geological fissures. Prominent features include volcanic peaks like Helgafell and the impressive Búrfellsgjá Lava Channel and Crater.
For an immersive volcanic experience, consider the Búrfellsgjá Crater – Búrfellsgjá loop from Kaplakriki. This moderate 14.4 km path explores the lava channel, crater, and fissures, offering a close-up view of the area's unique geology.
Generally, dogs are welcome on trails in Kaldárhraun Og Gjárnar, but it's always best to keep them on a leash to protect the delicate ecosystem and local wildlife. Please ensure you clean up after your pet.
The best time to hike is typically during the warmer months, from late spring to early autumn (May to September), when the weather is milder and daylight hours are long. This allows for better visibility of the volcanic landscapes and more comfortable hiking conditions.
No specific permits are generally required for hiking the public trails in Kaldárhraun Og Gjárnar, as it is a protected natural monument. However, always respect local regulations and signage, especially concerning protected areas or private land.
Given the often-unpredictable Icelandic weather, it's advisable to wear layers, including waterproof and windproof outer shells. Sturdy hiking boots are essential for navigating the uneven volcanic terrain. Bring water, snacks, a map or GPS device, and be prepared for sudden weather changes.
Yes, for those seeking a greater challenge, there are moderate to difficult routes available. The Helgafell – Helgafell Summit (Reykjanesfólkvangur) loop from Hafnarfjordur is a difficult 18.4 km trail that ascends to the summit of Helgafell, offering panoramic views and a significant workout.
Winter hiking is possible but requires extra caution and preparation due to shorter daylight hours, colder temperatures, and potentially icy or snowy conditions. Some trails may be less accessible. Always check weather forecasts and trail conditions before heading out in winter.
Despite the volcanic terrain, the area supports a surprising amount of vegetation adapted to lava soil. You might also spot typical Icelandic birds and other small animals. Keep an eye out for unique plant life thriving in this rugged environment.

