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
Hard
Total Distance
43,80 km
Descent Meters
1710 m
Ascent Meters
1710 m
Highest Point
2621 m
Total Time
11:30 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
Summit hike
From the Naturpark-Infozentrum, follow the Hinterautalstraße to the Gleirschhöhe. From there, take the left forest road towards Isarursprung/Kastenalm. Park your bike shortly before the Kastenalm and cross a small bridge to the right, then head steeply upwards past the Lafatscher Niederleger to the Halleranger. Once you reach the alpine floor, the paths split. Keep right at the junction until you reach the Hallerangerhaus. At the hut, keep right again and take the trail up to the Lafatscherjoch. From there, a narrow, initially easy trail leads left towards the western ridge of the Speckkarspitze and later involves easy climbing (1+) over the connecting ridge and short exposed passages to the
Refreshment stops
Infrastructure
5-Day Weather Forecast
© Data provided by: DreiWetter powered by Kachelmann
Last updated on 05.11.2026 (19:25)
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