Black Diamond · King County · WA
Frog Lake is a 0.3-mile easy trail near Black Diamond, in King County, WA. It climbs 32 ft and descends 14 ft, between 504 ft and a high point of 522 ft. Easy difficulty: calculated from 3% avg grade · 0.7 mi round trip, 49 ft climb. Mapped for hiking, trail running, mountain biking.
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Trail data © OpenStreetMap contributors (ODbL). Elevation: USGS 3DEP. Open the interactive map for routing, weather, and offline use.