4.6
(900)
8,526
hikers
217
hikes
Hiking around Oberaarsee offers access to a dramatic high-alpine environment, shaped by glaciers and characterized by expansive granite slabs, rocky terrain, and alpine meadows. The region features the glacial Oberaarsee, from which the Aare River originates, alongside the Oberaar Glacier and Lauteraar Glacier. Towering peaks such as the Finsteraarhorn contribute to the panoramic vistas, with other lakes like Grimselsee also present.
Last updated: April 27, 2026
4.7
(10)
77
hikers
6.24km
02:03
90m
100m
Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.
5.0
(2)
26
hikers
10.3km
04:31
630m
630m
Hard hike. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

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5.0
(2)
13
hikers
7.99km
03:43
560m
560m
Hard hike. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
1
hikers
4.31km
01:22
140m
140m
Moderate hike. Great for any fitness level. Mostly accessible paths. Sure-footedness required.
1
hikers
4.36km
01:22
150m
150m
Moderate hike. Great for any fitness level. Mostly accessible paths. Sure-footedness required.
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Impressive reservoir nestled into the breathtaking granite landscape. This is a popular starting point for the hike to the Oberaar glacier.
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The Sidelhorn is a 2764 m high mountain in the Bernese Alps massif in Switzerland. It lies on the border of the cantons of Valais and Bern and on the European main watershed. https://de.m.wikipedia.org/wiki/Sidelhorn
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Beautiful area and starting point for various mountain tours
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Magnificent view on the ascent to the Sidelhorn
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The Oberaar Glacier is a valley glacier in the eastern part of the Bernese Alps, in the canton of Bern in Switzerland. It is almost 5 km long, has an average width of 800 m and, together with the side firns, covers an area of around 4 km².
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Gigantic structure at this height
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⭐️⭐️⭐️⭐️⭐️ 𝐀𝐛𝐬𝐨𝐥𝐮𝐭 𝐄𝐦𝐩𝐟𝐞𝐡𝐥𝐞𝐧𝐬𝐰𝐞𝐫𝐭! This short and easy mountain hike in the Bernese Oberland leads in a high alpine atmosphere from the Oberaarsee dam to the Oberaar glacier tongue, where the Aare shoots out as a young river. At around 290 kilometers, the Aare is the longest river that runs entirely within Switzerland, from the Aare glacier to the confluence with the Rhine near Koblenz (AG). The Berghaus Oberaar is located near the dam wall of the Oberaarsee, below it directly on the lake there is a large parking and camper place. From the Grimselpasshöhe, the six-kilometre-long private panoramic road leads to the car park below the Berghaus Oberaar. The road will be open from July, it can only be driven in one direction: from the Grimsel Pass to the Berghaus Oberaar on the hour, from the Berghaus Oberaar to the Grimsel Pass on the half hour. The parking lot is chargeable. Then it is about 2.5 hours hiking time on an easy and good mountain path to the glacier tongue and back to the dam wall. The Oberaar Glacier is almost 5 km long and has an average width of 800 m. The glacier originates at the glacier pass of the Oberaarjoch (3,216 m) between the Oberaarhorn (3,631 m) and the Oberaarrothorn (3,477 m). The glacier tongue is at 2,310 m at the far end of the Oberaar reservoir. The Oberaarsee is the highest reservoir in the headwaters of the Aare. The Oberaarjochhütte (SAC) is located on the Oberaarjoch at 3,256 m.
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There are over 200 hiking routes around Oberaarsee, catering to various skill levels. You'll find everything from moderate paths to more challenging alpine ascents in this high-alpine environment.
Yes, there are 56 easy routes around Oberaarsee. While the region is high-alpine, some trails are accessible. For example, the walk across the Oberaarsee dam to reach the glacier is an easy 7.1 km round trip, taking about 2 hours and 10 minutes. Parts of the "Oberaar Trail" near Grimsel Hospiz can also be made accessible for families, sometimes involving cable car rides.
The region around Oberaarsee is generally dog-friendly, but it's crucial to keep dogs on a leash, especially in areas with grazing livestock or protected wildlife. Always ensure your dog is well-behaved and can handle the alpine terrain. Check local signage for any specific restrictions.
Yes, many routes around Oberaarsee are designed as loops. For instance, the Oberaar Dam – Trail to Oberaar Glacier loop from Oberaarsee is a moderate 5.7 km circular trail offering glacier views. Another option is the challenging Oberaarsee – Triebtensee Pass loop from Oberaarsee, which covers 10.3 km through varied alpine terrain.
The Oberaarsee region is rich in dramatic natural features. You'll encounter the glacial Oberaarsee itself, the impressive Oberaar Glacier and Lauteraar Glacier, and towering peaks like the Finsteraarhorn. Other picturesque lakes such as Grimselsee and Triebteseewli, along with gorges and waterfalls, are also part of the landscape. Keep an eye out for alpine flowers and chamois.
Parking is typically available near the Grimsel Pass area, which serves as a common starting point for many hikes to Oberaarsee. Specific parking information for individual trailheads can often be found on komoot tour pages or local tourism websites.
Access to the Oberaarsee region is possible via public transport, often involving bus services to the Grimsel Pass area. From there, some trails are directly accessible, or further connections might be needed. It's advisable to check current bus schedules, especially during the alpine season.
The best time to hike around Oberaarsee is generally during the summer months, from late June to September, when the snow has largely melted, and trails are most accessible. The weather is typically more stable, offering clearer views of the alpine landscape. Winter hikes are possible but require specialized equipment and experience due to snow and ice conditions.
Yes, the Berghaus Oberaar lodge offers a cozy resting point with views of the lake, providing refreshments and potentially accommodation. In the broader Grimsel Pass area, you can find other cafes, pubs, and restaurants, as well as mountain hotels like Grimsel Hospiz, offering options for food and lodging.
The area is highly rated by the komoot community, with an average score of 4.6 stars from over 800 reviews. Reviewers often praise the dramatic high-alpine environment, the stunning glacial lakes, and the panoramic vistas of towering peaks. The diversity of routes, from moderate paths to challenging ascents, is also frequently highlighted.
While popular, the vastness of the alpine landscape allows for quieter experiences. To find less crowded trails, consider exploring some of the more challenging routes or starting your hike early in the morning. Trails leading to higher elevations or away from the main dam area might offer more solitude.
Hike durations vary significantly based on the route's difficulty and length. For example, the moderate Oberaar Dam – Trail to Oberaar Glacier loop from Oberaarsee takes about 1 hour 52 minutes. More challenging routes, like the difficult Oberaarsee – Sidelhorn Summit loop from Oberaarsee, can take around 3 hours 41 minutes or longer for extensive alpine tours.


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