Left Hand Reservoir is an easy dirt road that winds through Roosevelt National Forest. It has occasional rocky spots, undulations, and mildly steep sections that may pose some challenges for low-clearance 2WD vehicles.
The trail starts at Brainard Lake Road just before the fee collection hut and gradually climbs up to Left Hand Reservoir. Along the drive, there are a few hiking trail access points, including Little Raven Trail, Sourdough Trail, and Niwot Mountain. Once at the top of the trail, there are multiple large parking areas for the Left Hand Reservoir Day Use area, access to Left Hand Reservoir itself, and excellent views of the nearby Indian Peaks Wilderness.
Note that there is no camping along the trail or at the top in the Day Use area.