108
riders
3
rides
Gravel biking in Kaldárhraun Og Gjárnar offers routes through a distinctive volcanic landscape, characterized by rugged terrain and unique geological features. The area features well-preserved pahoehoe lava formations, which provide varied surfaces for cycling. Significant geological fissures and volcanic peaks like Helgafell and Búrfell contribute to the diverse environment. This region, designated a natural monument, provides a robust setting for no traffic gravel bike trails.
Last updated: July 9, 2026
8
riders
17.7km
00:59
190m
190m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
63
riders
41.0km
02:45
350m
350m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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24
riders
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
riders
18.4km
01:03
170m
170m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Kaldárhraun Og Gjárnar
It's a nice and easy walk to get here. Recommend.
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Excellent cycling path, allows gaining a lot of speed on the downhills.
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The shipwreck is clearly visible from the lookout point. It's not recommended to climb down to avoid damaging the coastline.
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The reservoir no longer exists. The water has been drained and there are no plans to rebuild it.
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Nestled in the picturesque town of Hafnarfjörður, Iceland, lies the tranquil Hvaleyrarvatn, a serene lake that enchants visitors with its pristine beauty. Surrounded by rolling hills and lush greenery, this hidden gem offers a peaceful retreat from the hustle and bustle of everyday life. The crystal-clear waters of Hvaleyrarvatn mirror the ever-changing skies above, creating a breathtaking reflection that amplifies the natural splendor. Visitors can explore the lake's shores, meandering along peaceful trails that lead to secluded spots for picnics or quiet contemplation. Hvaleyrarvatn's idyllic setting makes it a perfect haven for nature lovers and a sanctuary for those seeking solace amidst Iceland's awe-inspiring landscapes.
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From Heiðmörk, a truly magical view unfolds over the Capital area, revealing the splendor of Reykjavík in all its glory. Standing atop a hill or cliff within Heiðmörk, visitors are treated to an enchanting panorama. The sprawling cityscape sparkles below, with its vibrant rooftops, iconic landmarks, and the shimmering waters of Faxaflói Bay stretching beyond. As daylight fades, the city's lights twinkle like stars, casting an ethereal glow. The contrast between the urban landscape and the surrounding natural beauty is awe-inspiring, evoking a sense of wonder and reminding us of the harmonious coexistence between human creations and the stunning Icelandic landscapes.
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Nestled near the magnificent Miðhöfði and Stórhöfðahraun in Hafnarfjörður, lies a picturesque picnic location that captivates visitors with its natural beauty. This idyllic spot offers a perfect setting for a delightful outdoor meal. With lush green meadows, rolling hills, and panoramic views of the surrounding volcanic landscapes, it provides a tranquil escape from the bustling city. The gentle breeze carries the scent of wildflowers, adding to the sensory experience. Families and friends can gather on the soft grass, spread out their blankets, and enjoy a leisurely picnic while immersing themselves in the stunning scenery. It's a serene oasis where nature's wonders and delectable treats combine to create lasting memories.
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Kaldárhraun Og Gjárnar offers a unique gravel biking experience across a rugged volcanic landscape. You'll encounter distinctive pahoehoe lava formations, which are smooth, rope-like surfaces, along with varied unmade trails. The area is known for its geological fissures and volcanic peaks, providing a truly immersive natural environment.
Yes, several routes in the area are designed as loops, perfect for a circular ride. For example, you can explore the Picnic location at Miðhöfði – Hvaleyrarvatn Lake loop from Hafnarfjordur, which offers a moderate challenge over 17.7 km. Another option is the View of Elliðavatn – Forest Path loop from Hádegishólar, a longer 40.9 km route.
The no-traffic gravel bike trails in Kaldárhraun Og Gjárnar are generally considered to be of moderate difficulty. They are suitable for riders with some experience, offering a good balance of challenge and scenic beauty. All three available routes are rated as moderate.
Absolutely. If you're looking for a longer ride, consider the View of Elliðavatn – Forest Path loop from Hádegishólar, which spans over 40 kilometers. Another excellent option is the Elliðaárdalur Cycle Paths – Fossvogsbakkar Shipwreck loop from Kópavogsvöllur, covering nearly 36 kilometers.
Kaldárhraun Og Gjárnar is rich in geological wonders. As you cycle, you'll be able to observe well-preserved pahoehoe lava formations, geological fissures, and volcanic peaks like Helgafell and Búrfell. The Búrfellsgjá lava channel, with its crater and additional fissures, is another significant feature of the area.
The best time for gravel biking in Kaldárhraun Og Gjárnar is typically during the warmer months, from late spring to early autumn (May to September). During this period, the weather is milder, and the trails are less likely to be affected by snow or ice, offering more comfortable riding conditions and better visibility of the unique volcanic landscape.
While the trails are generally rated as moderate, some sections might be suitable for families with older children who have some gravel biking experience. The unique volcanic landscape offers an exciting adventure. For a shorter, more manageable loop, you might consider the Picnic location at Miðhöfði – Hvaleyrarvatn Lake loop from Hafnarfjordur.
Parking is generally available at common access points to the nature reserve, particularly near trailheads or popular starting points in Hafnarfjörður or surrounding areas. For specific routes, check the tour details on komoot for suggested starting locations which often include parking information.
Public transport options to Kaldárhraun Og Gjárnar are available from nearby towns like Hafnarfjörður. However, policies regarding bicycles on public buses can vary. It's advisable to check with the local public transport provider (Strætó) directly regarding their rules for carrying bicycles, especially during peak hours.
Kaldárhraun Og Gjárnar is a natural monument, so amenities directly on the trails are limited. However, being located near Hafnarfjörður, you'll find various cafes, restaurants, and shops in the town itself, which is a short distance from the reserve's access points. It's recommended to carry sufficient water and snacks for your ride.
Kaldárhraun Og Gjárnar is special due to its designation as a natural monument and its remarkably preserved volcanic landscape. It boasts some of the last remaining examples of uncracked pahoehoe lava in the Hafnarfjörður area. The 'no traffic' aspect allows for an undisturbed and immersive experience through this unique geological wonderland, away from roads and vehicles.

