Mount Disappointment – Mueller Tunnel loop from Altadena
Mount Disappointment – Mueller Tunnel loop from Altadena
2.7
(20)
86
riders
Mount Disappointment – Mueller Tunnel loop from Altadena
05:52
54.8km
2,080m
Mountain biking
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike. The starting point of the route is right next to a parking lot.
Last updated: May 8, 2026
Tips
Temporary access restrictions
Includes segments with temporary access restrictions.
After 50.1 km for 1.86 km
Open: • 6:00 AM-8:00 PM (otherwise closed)
Waypoints
Start point
Parking
Get Directions
4.53 km
LA County Open Space
Nature Reserve
6.75 km
Henninger Flats
Highlight • Viewpoint
Tip by
16.8 km
Mt Wilson Toll Rd
Highlight • Trail
Tip by
17.3 km
Mt Wilson Radio summit
Highlight • Summit
Tip by
20.9 km
Observatory overlook
Highlight • Viewpoint
Tip by
21.7 km
Sunrise view
Highlight • Viewpoint
Tip by
28.7 km
Mount Disappointment
Highlight • Summit
Tip by
37.0 km
Mt Lowe gravel road
Highlight • Trail
Tip by
37.4 km
Mueller Tunnel
Highlight • Structure
Tip by
41.9 km
Ye Alpine Tavern
Ruins
51.2 km
Andrea Wilson Triangle
Nature Reserve
54.8 km
End point
Parking
Way Types & Surfaces
Way Types
25.9 km
14.5 km
13.1 km
1.37 km
Surfaces
23.0 km
17.3 km
12.8 km
1.26 km
267 m
170 m
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Elevation
Highest point (1,790 m)
Lowest point (380 m)
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Weather
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Today
Thursday 21 May
26°C
15°C
0 %
Additional weather tips
Max wind speed: 13.0 km/h
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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.