Left Hand Canyon, Canyon in Boulder County, Colorado, US

Left Hand Canyon is a canyon in Boulder County, Colorado, cut by the Lefthand River, a roughly 40-kilometre tributary of Saint Vrain Creek that drains part of the Front Range foothills northwest of Boulder. The river runs through locally narrow gorges, and Lefthand Canyon Drive follows the valley floor. Ridges above the valley hold raptor populations and are usually closed from late winter to early summer during nesting season.

The area developed during Colorado's mining era as a connecting route between Boulder Valley and the mountain mining settlement of Ward. The established roads reflect the historical need to transport resources and people between the valleys.

The road through the canyon attracts road cyclists from the area who regularly train and gather here. The place has become a meeting point for athletes who use the mountain terrain for their sport.

Multiple access points and parking areas line Left Hand Canyon Drive near US Highway 36. The road is easily accessible by car with parking available throughout the route.

Abandoned old cars are scattered along the road toward Ward, appearing like unintended roadside art. These rusted vehicles are silent reminders of an earlier era and give the place an unusual character.