Arizona
San Tan Mountain Park Goldmine Trail (Queen Creek, Arizona)
Lost Dutchman State Park – Treasure Loop Trail (Apache Juction, Arizona)
California
Mike Schulner Trail (Palm Springs Area, California)
Del Mar – Torrey Pines Reserve Area
Colorado
Boulder Canyon, Mesa Trail & Mallory Cave (Boulder, Colorado)
Hawaii
Kalalau Trail & Hanakapi Ai Falls Trail (kauai)
Iowa
Meredith Trail (Des Moines, Iowa)
