Mosquito Pass is one of the highest mountain passes in the state of Colorado. It’s a dangerous route that can only be accessed by an unpaved 4×4 road nicknamed “The Highway of Frozen Death”. It serves as a boundary between Lake and Park County.

It’s called Mosquito Pass Road (County Road 12) and County Road 3. It's nicknamed 'the highway of the frozen death' because of extremely dangerous patches of ice. An old mining road, north of the pass, climbs up to Mosquito Peak at 4,165m (13,664ft) above sea level.

Mosquito Pass, with an elevation of 13,185 ft (4,019 m), is a high mountain pass in the Mosquito Range of central Colorado in the United States. It lies on the boundary between Lake and Park counties between Leadville (west) and Fairplay (east).

Mosquito Pass Auto Tour is a 9 1/2-mile interpretive route north of Fairplay to the summit of Mosquito Pass on the way to Leadville. It is moderate to difficult, steep and very rocky, and a high-clearance, 4-wheel drive vehicle is recommended.

3 days ago · Experience this 17.1-mile point-to-point trail near Alma, Colorado. Generally considered a moderately challenging route. This is a very popular area for off-road driving and scenic driving, so you'll likely encounter other people while exploring.

Located in the Mosquito Range, Mosquito Pass travels from Leadville to Highway 9 north of Fairplay. At 13,186 feet, it’s the highest pass in the United States. In the 1870s, Leadville’s silver mining district was legendary, and this pass was used as the fastest way to reach the mines.

Peaking at around 13,185 feet, Mosquito Pass is among the highest North American passes accessible to 4WD vehicles. Connecting the towns of Alma and Leadville, Colorado, this trail offers spectacular views, especially in early autumn …

Getting to the Pass at 13,182' will be an adventure whether it is done on foot or in a legitimate 4X4 vehicle. Mosquito Pass was the original very rough road into Leadville in the late 1800s, and provides a history lesson and incredible views in the middle of the Colorado Rockies.

Mosquito Pass, at an elevation of 13,185 feet, is one of the highest mountain passes in Colorado and its access roads are rich in mining heritage. Constructed in the late 1870s, the Mosquito Pass Road was popular despite its treacherous terrain because it was and still is the shortest route between Fairplay and Leadville.

View GPS trail map, conditions, and difficulty of Mosquito Pass in Colorado. Plan your next adventure with the OnX Offroad App.