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27th October 2026

By Daniel Perret

Climb & Fly · Titlis Backside · Engelbergertal

Grassen – Climb & Fly

The ascent to the Grassen passes by the bivouac and then over the glacier to the summit. With a bivouac night, you can make the final ascent to the sunrise.

Difficulty
T4 // L
Distance / Meter of altitude
7 km · ↑ 1950 m / ↓ 0 m
Time
5–6 hours
Starting background
Glacier
Elevation information
1080 / 2946 m above sea level.
Best time
July–October
Star exposure
N–NE
Material
The difficulty levels indicated describe the ascent or climbing itself. They do not assess the requirements for takeoff, flight, and landing.
Tour map · Grassen
Map with ascent, starting points and flight path for Grassen
Tour map Grassen

Starting point and entrance

The ascent leads past the Grassenbiwak. The hiking map shows the access from the Engelberg valley via the Firnalpeli.

Route description

From the bivouac, the journey continues over the glacier to the summit. With an overnight stay in the bivouac, the final ascent to sunrise can be made. L stands for the easy grade on the high-altitude hiking scale.

Takeoff, flight and landing

The glacier cone provides the described starting area for the flight back to the valley. The map also includes an alternative starting point at the bivouac.

Safety and conditions

The tour connects the T4 area with a glacier ascent. Assess the snow conditions, crevasses, and wind conditions before continuing to the summit.

Check the weather, wind, thermals, current airspace, and temporary restrictions before the tour. Ensure start and landing options as well as the return route in case you cannot fly. The maps show the route; local signs and current area information should be checked before the flight.

Briefly answered

Questions about the tour

Where does the Grassen tour begin?

The ascent leads past the Grassenbiwak. The hiking map shows the access from the Engelberg valley via the Firnalpeli.

How long is the tour and how much time do I need?

The route is stated as 7 km, 1950 hm ascent, 0 hm descent and 5–6 h.

Where can I start and land?

The glacier cone provides the described starting area for the flight back to the valley. The map also includes an alternative starting point at the bivouac.

What dangers are to be considered?

The tour connects the T4 area with a glacier ascent. Assess the snow conditions, crevasses, and wind conditions before continuing to the summit.

Photos of the tour

Continue planning

Other Hike-and-Fly tours

Experience from the Engelberg Valley

The authors

Cover of the Hike & Fly Guide Central Switzerland

Tour ideas for further planning

Hike & Fly Guide Central Switzerland

From hiking ascents to alpine climb-and-fly routes: more hiking ideas from Julian Fürsinger, Jonas Käppeli and Dani Perret.

View the book in the outdoor guide shop ↗

Portrait of Daniel Perret

UIAGM/IFMGA mountain guide · Engelberg

Daniel Perret

Daniel, usually called Dani, is a UIAGM/IFMGA mountain guide in Engelberg. As a mountain guide, father of a family and mountain sports enthusiast, he is active in the Engelberg Valley and shares his hiking expertise here.

Portrait of Jonas Käppeli

Author · Mountaineering and Flying

Jonas Käppeli

Since childhood, Jonas has been traveling in the mountains. Paragliding added another dimension: mountaineering and flying are intertwined for him. When the thermic forecast promises good conditions, he takes to the air.

Portrait of Julian Fürsinger

Author · Climbing and Flying

Julian Fürsinger

Julian searches for secluded corners and terrain for new projects. The paraglider expands his horizons in the mountains – from rock climbing to evening flights. He prefers to travel off the beaten path.

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