Circuito de BTT (ponto de partida: Preble Creek)

Marshall Mesa loop via Dowdy Draw Trail — Boulder

Canyon Loop & Benjamin Loop – Betasso Preserve

Marshall Mesa loop — Boulder

Circuito de Marshall Mesa - Boulder Open Space e Mountain Parks

Walker Ranch Loop – Walker Ranch Park & Eldorado Canyon State Park

Erie Singletrack Dirt Jumps and Coal Creek Trail loop — Weld County

Greenway and Perimeter Trails gravel loop — Rocky Mountain Arsenal National Wildlife Refuge

Overland Loop — Lyons

Coal Creek Trail loop — Weld County

North Boulder loop — Boulder

Valmont Bike Park loop — Boulder

Barr Lake Perimeter Trail loop — Brighton