Otto Tunnel – Grenzbach loop from Seifen
Otto Tunnel – Grenzbach loop from Seifen
4.8
(54)
168
hikers
05:12
18.6km
340m
Hiking
Hard hike. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required. The starting point of the route is accessible with public transport.
Last updated: April 29, 2026
Tips
Includes a segment that may be dangerous
A part of this route comprises technical, difficult, or hazardous terrain. Specialist equipment and prior experience may be required.
After 16.5 km for 9 m
Waypoints
Start point
Bus stop
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1.19 km
Highlight • Trail
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Tip by
1.57 km
Highlight • River
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Tip by
3.63 km
Highlight • Structure
Tip by
9.09 km
Highlight • Cave
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Tip by
16.4 km
Highlight • Rest Area
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Tip by
16.5 km
Highlight • Climb
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Tip by
16.7 km
Highlight • River
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Tip by
17.5 km
Highlight • Trail
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Tip by
18.6 km
End point
Bus stop
Way Types & Surfaces
Way Types
13.0 km
2.09 km
2.01 km
1.45 km
< 100 m
< 100 m
< 100 m
Surfaces
7.53 km
5.21 km
3.07 km
1.90 km
918 m
< 100 m
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Elevation
Highest point (330 m)
Lowest point (170 m)
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Weather
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Wednesday 20 May
21°C
12°C
0 %
Additional weather tips
Max wind speed: 10.0 km/h
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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.