Upper Clamshell Truck Trail

Monrovia · Los Angeles County · CA

6.4 miDistance
3,750 ftTotal climb
1,912 ftTotal descent
4,692 ftHigh point
2,840 ftLow point
ModerateDifficulty

Elevation profile

Upper Clamshell Truck Trail is a 6.4-mile moderate trail near Monrovia, in Los Angeles County, CA. It climbs 3,750 ft and descends 1,912 ft, between 2,840 ft and a high point of 4,692 ft. Moderate difficulty: calculated from 17% avg grade · 12.8 mi round trip, 5,741 ft climb. Mapped for other.

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Trail data © OpenStreetMap contributors (ODbL). Elevation: USGS 3DEP. Open the interactive map for routing, weather, and offline use.