Mosquito Pass is one of Colorado's highest mountain passes, reaching elevations of more than 13,000 feet along the divide between the South Platte and Arkansas Rivers. The pass, which gained national notoriety after its repeated crossings by Methodist Father John Lewis Dyer in the 1860s, can only be accessed on foot or with appropriately hardy vehicles during the summer months, including four-wheel-drive automobiles and offroad motorcycles.

Its two-way road requires significant maneuverability skills and is not recommended for novice or nervous drivers. Spectacular views of the Rocky Mountains are offered from the pass, along with views of nearby Lake and Park Counties. Visitors can embark on the pass at either Leadville or Fairplay, though all drivers should note that there are no amenities along the route, including outhouses or gas stations.

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