4.8
(22)
162
hikers
15
hikes
Mountaineering routes around Grimselsee are characterized by dramatic alpine scenery, rugged granite formations, and a unique blend of natural and man-made features. The region features prominent glaciers such as the Unteraar and Fiescher Glaciers, alongside several turquoise reservoirs including Grimselsee itself. High mountain passes like the Grimsel Pass, reaching 2,163 meters (7,100 ft), offer expansive vistas and challenging terrain for experienced mountaineers. This diverse landscape provides a range of demanding alpine expeditions.
Last updated: June 22, 2026
5.0
(1)
10
hikers
6.35km
03:16
540m
540m
Hard mountaineering route. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
4.0
(2)
5
hikers
10.7km
05:06
730m
730m
Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

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5.0
(6)
17
hikers
7.60km
03:22
350m
350m
Hard mountaineering route. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
4.5
(8)
35
hikers
13.1km
05:41
590m
590m
Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
5.0
(1)
5
hikers
4.70km
01:45
120m
110m
Hard mountaineering route. Great for any fitness level. Sure-footedness, sturdy shoes and alpine experience required.
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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
4
0
In foggy weather you can't sunbathe, but it is still worth seeing and definitely worth a visit.
0
0
You should bring sturdy shoes and surefootedness. If it rains, hiking poles are highly recommended.
0
0
Sturdy shoes and surefootedness are recommended. Hiking poles would be ideal.
0
0
Very nice hike. Below the Gelmerhütte we enjoyed our lunch with a magnificent view. The route can also be walked in the opposite direction. Tip: reserve the Gelmerbahn in advance, otherwise there can be long waiting times.
0
0
The path consists of large stones that serve as steps. They are of different heights and widths and the path is narrow in places and goes steeply downhill.
0
0
The path is an old trade route and is mostly easy to walk!
0
0
Mountaineering routes around Grimselsee are predominantly challenging. Out of the 15 routes listed, 14 are rated as difficult, requiring excellent fitness, sure-footedness, sturdy footwear, and prior alpine experience. These routes often involve significant elevation gain, technical sections with boulders, and rocky terrain. There is one moderate route, but no easy mountaineering options are highlighted in this guide.
While the mountaineering routes in this guide are generally demanding and not suitable for young children or beginners, the broader Grimselwelt region does offer some leisurely walks and hiking trails. However, for the specific mountaineering routes highlighted here, prior alpine experience and good physical condition are essential, making them less ideal for families seeking easy outings.
The Grimselsee region is renowned for its dramatic alpine scenery. You'll encounter striking granite formations, prominent glaciers like the Unteraar and Fiescher Glaciers, and several turquoise reservoirs including Grimselsee itself, Oberaar, Räterichsboden, and Gelmersee. High mountain passes such as the Grimsel Pass offer expansive vistas. You might also spot cascading waterfalls, especially along the North Shore of Grimselsee.
Yes, several mountaineering routes around Grimselsee are designed as loops. For instance, the Grimsel Pass – Sidelhorn Summit loop from Grimselpass offers panoramic views of the Valais 4000m peaks. Another option is the View of Gelmersee – Gelmersee loop from Räterichsbodensee, which provides stunning views of the Gelmersee reservoir.
The Grimselsee region is highly rated by the komoot community, with an average score of 4.8 stars from over 20 reviews. Mountaineers frequently praise the dramatic alpine scenery, the rugged granite formations, and the unique blend of natural beauty with impressive man-made structures like the reservoirs and hydroelectric facilities. The challenging terrain and rewarding panoramic views from summits like Sidelhorn are also highly appreciated.
The best time for mountaineering around Grimselsee is typically during the summer months, from late June to September, when the high mountain passes are clear of snow and weather conditions are generally more stable. However, alpine weather can change rapidly, so it's crucial to check local forecasts and conditions before heading out, even in summer.
While many hiking trails in Switzerland are dog-friendly, the demanding nature of the mountaineering routes around Grimselsee, with their rocky terrain, steep ascents, and potential for technical sections, means they may not be suitable for all dogs. If you plan to bring your dog, ensure they are fit, experienced in alpine environments, and that you are prepared for any challenges. Always keep dogs on a leash, especially in areas with livestock or wildlife.
The Grimsel Pass region is accessible by public transport, primarily via PostBus services during the summer season. These buses connect major hubs to the Grimsel Pass and other key points, providing access to various trailheads. It's advisable to check the current PostBus timetable for specific routes and schedules to plan your journey to the starting points of tours like the Grimsel Pass – Sidelhorn Summit loop.
Yes, the Grimselwelt region offers several options for refreshments. The historic Grimsel Hospiz, perched dramatically on a rocky outcrop, provides a picturesque spot for a break. There are also facilities at Hotel Handeck and other mountain huts or restaurants along the Grimsel Pass road, particularly during the main season, where you can find food and drinks after your mountaineering adventures.
For experienced mountaineers seeking a challenge, routes like the Thousand Steps Trail – Gelmersee loop from Gelmersee, an 8.1-mile trail, offer challenging alpine terrain. Another demanding option is the Summit Cross – Furka Pass Summit loop from Klein Furkahorn, which involves significant elevation gain and rewards with expansive views.
Yes, cascading waterfalls add to the dramatic beauty of the Grimsel region. A notable waterfall attraction can be found along the North Shore of Grimselsee, which features a loop through alpine terrain with a waterfall. You may also encounter smaller cascades and streams fed by melting glaciers throughout the area.
Parking is generally available at key access points and mountain passes in the Grimselsee region, such as at Grimsel Pass itself or near the Räterichsbodensee. However, during peak season, these spots can fill up quickly. It's advisable to arrive early or consider using public transport where available to reach trailheads.


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