From 29 October to 6 November 2026, the flow measurement station at the source of the Isar River will be renovated. Due to construction work in the area of the Isar source, traffic disruptions and longer waiting times may occur on the road towards Kastenalm.
Start Point
Information office Scharnitz (P2)
End Point
Information office Scharnitz (P2)
Difficulty
Medium
Total Distance
37,90 km
Descent Meters
860 m
Ascent Meters
860 m
Highest Point
1774 m
Total Time
07:30 h
Status
Stamina
Technique
Best Time
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
In an emergency
In an emergency
Guest card = ticket
Guest card = ticket
Bike & Hike
Hiking tour
Long hike requiring good physical condition. To save time, it is recommended to cycle as far as the Kastenalm.
From the Naturpark-Infozentrum Scharnitz head towards Hinterautal and continue to the Gleirschhöhe. From there, follow the forest road on the left towards the Isarursprung. Shortly before the Kastenalm, park your bike and cross a small bridge to the right. Then the path leads steeply upwards past the Lafatscher Niederleger to the Halleranger. Once you reach the alpine pasture floor, the paths divide; here turn right to the Hallerangerhaus or continue straight ahead to the Hallerangeralm.
If you would like to get an impression in advance, you can watch two videos here:
Return to the starting point via the same route.
Details for one direction:
- Bike route no. 578: approx. 13.8 km, 270 m
