Clamshell Trail

Monrovia · Los Angeles County · CA

0.6 miDistance
461 ftTotal climb
61 ftTotal descent
1,322 ftHigh point
913 ftLow point

Elevation profile

Clamshell Trail is a 0.6-mile trail near Monrovia, in Los Angeles County, CA. It climbs 461 ft and descends 61 ft, between 913 ft and a high point of 1,322 ft. Mapped for hiking, trail running.

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Trail data © OpenStreetMap contributors (ODbL). Elevation: USGS 3DEP. Updated 2026-07-21. Open the interactive map for routing, weather, and offline use.