Raynolds Pass, elevation , is a mountain pass on the Montana-Idaho border in the Rocky Mountains, United States. The pass is on the Continental Divide, and is traversed by a state highway (Idaho State Highway 87 and Montana Highway 87). The pass is named for Captain William F. Raynolds, an early explorer and officer-in-charge of the Raynolds Expedition of the Yellowstone region. The pass is very gentle, with only a slight grade and no major hairpin curves to the highways connections with U.S. Route 287 in Montana and U.S. Route 20 in Idaho.