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United States
Colorado
Park County

Mosquito Pass Road

Hard

2.8

(19)

92

runners

Mosquito Pass Road

01:10

8.90km

480m

Running

Challenge yourself on Mosquito Pass Road, a difficult 5.5-mile jogging route with 1585 feet of gain and stunning alpine views.

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

Get Directions
1

2.59 km

Ridge to London Mountain

Highlight • Climb

London Mountain is 13,194 feet and is mainly climbed by peak baggers checking 13,000 foot peaks off their list. There are a number of ways to summit the peak, but …

Tip by

2

4.43 km

Mosquito Pass

Highlight • Mountain Pass

Mosquito Pass (sandwiched between Mosquito Peak and Mount Evans "B") sits at 13,185 feet atop an old mining road. The pass separates the towns of Alma and Leadville and requires …

Tip by

B

8.90 km

End point

Parking

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Way Types & Surfaces

Way Types

8.87 km

Surfaces

8.86 km

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Elevation

Elevation
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Saturday 10 October

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Frequently Asked Questions

Where can I park to access the Mosquito Pass Road trail?

The Mosquito Pass Road is a historic route connecting Leadville and Alma, Colorado. You can typically access it from either side. Parking is generally along the roadside where safe and permitted, as it's primarily a 4WD road. Be aware that specific designated parking areas are not widely available, so plan to park carefully and considerately.

Is the Mosquito Pass Road trail dog-friendly?

Yes, the Mosquito Pass Road trail is generally dog-friendly. As it's located within the Pike-San Isabel National Forests, dogs are typically allowed but should be kept on a leash to protect wildlife and ensure the safety of other trail users. Always practice Leave No Trace principles, including packing out all pet waste.

What is the best time of year to jog this route?

The best time of year to jog this route is typically late summer into early autumn. Snow can block the road well into late summer, and the extreme elevation means conditions can change rapidly. Early autumn offers the added bonus of spectacular fall foliage, with the surrounding valley bursting into vibrant gold, amber, and green hues.

Do I need a permit or pay an entrance fee for this trail?

No, generally you do not need a permit or pay an entrance fee for day use on the Mosquito Pass Road trail, as it is located within the Pike-San Isabel National Forests. However, it's always a good idea to check the latest regulations from the U.S. Forest Service for any updates or specific requirements, especially if you plan on camping or engaging in other activities.

What is the terrain like for jogging on Mosquito Pass Road?

The terrain on Mosquito Pass Road is extremely rugged and challenging for jogging. Descriptions frequently mention 'wall to wall rocks,' 'loose shale,' 'heavily rutted with large rocks,' and washed-out sections. The upper portions are particularly narrow and rocky. It is not a smooth path but a demanding off-road track, requiring careful foot placement and significant effort.

What notable sights or landmarks can I see along the route?

Along the route, you'll encounter several notable sights. The trail climbs to a summit of 13,185 feet, offering impressive vistas. You'll also see interesting old mining structures, especially on the east side. At the summit, there's a monument honoring Father Dyer, known as 'The Snowshoe Itinerant.' Don't miss the Mosquito Pass itself and the ridge leading to London Mountain.

Is this route suitable for beginners?

No, this route is not suitable for beginners, especially for jogging. It is rated as 'difficult' due to its extreme elevation, peaking at 13,185 feet, which means significantly thinner air. The terrain is also very rocky and uneven, making it a physically demanding experience even for experienced trail runners. Acclimatization to the altitude is crucial before attempting any activity here.

Does the trail intersect other well-known paths?

Yes, the route primarily follows sections of the Mosquito Pass Road (66% and 43% of the route covered by different segments of this road name). It also passes through a section of Cooney Lake Road (27%) and another smaller segment of Mosquito Pass Road (6%).

What should I bring when jogging on Mosquito Pass Road?

Given the extreme elevation and rugged terrain, you should bring plenty of water, high-energy snacks, appropriate layers of clothing for rapidly changing weather, sun protection (hat, sunglasses, sunscreen), and sturdy trail running shoes with good ankle support. A map, compass or GPS device, and a first-aid kit are also highly recommended due to the remote and challenging nature of the route.

What are the primary challenges of jogging this route?

The primary challenges for jogging this route are its extreme elevation and rugged terrain. The high altitude (peaking at 13,185 feet) means significantly thinner air, which greatly increases physical demands. The road itself is characterized by 'wall to wall rocks,' 'loose shale,' and heavily rutted sections, making for a very difficult running surface. Snow can also be an issue well into late summer.

Are there any specific safety considerations for this high-altitude route?

Yes, safety is paramount on this high-altitude route. Acclimatization to the altitude is crucial to prevent altitude sickness. Be prepared for rapidly changing weather conditions, including sudden storms and temperature drops. The rugged terrain requires careful footing to avoid injuries. Due to its remote nature, carry emergency supplies and inform someone of your plans. The trail's extreme nature has even earned it the nickname 'The Highway of Frozen Death' historically, emphasizing the need for caution.

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