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Routes
Hiking trails & Routes
United States
Colorado
Gunnison County

Lead King Basin Loop

Hard

2.6

(19)

53

hikers

Lead King Basin Loop

06:05

19.7km

720m

Hiking

Hike the difficult 12.2-mile Lead King Basin Loop in White River National Forest, featuring the historic Crystal Mill and alpine views.

Last updated: February 26, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Maroon Bells–Snowmass Wilderness

White River National Forest

Waypoints

A

Start point

Get Directions

1

644 m

Lizard Lake

Highlight • Lake

Lizard Lake is a small lake in the mountains of Marble, Colorado. The lake is situated off the side of an old forest service road that leads to the historic …

Tip by

2

5.87 km

Crystal Mill

Highlight • Monument

The Crystal Mill located just outside of Marble is an old powerhouse that was constructed in the 1890s. It's right off the side of the forest road that you run …

Tip by

B

19.7 km

End point

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Way Types & Surfaces

Way Types

18.6 km

706 m

251 m

< 100 m

< 100 m

Surfaces

19.6 km

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (3,300 m)

Lowest point (2,620 m)

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Weather

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Today

Sunday 10 May

16°C

-1°C

0 %

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Max wind speed: 10.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

What is the terrain like on the Lead King Basin Loop?

The Lead King Basin Loop is primarily a rugged dirt road that circumnavigates Sheep Mountain. Hikers can expect varied and demanding terrain, including rocky sections, narrow shelf roads, and switchbacks. The road is built on shale, which can become very slick when wet, and there are steep climbs and several stream crossings, especially in early summer.

When is the best time of year to hike the Lead King Basin Loop?

The best time to experience the Lead King Basin Loop for hiking is typically from July to September. Snow can block sections of the road as late as July and reappear as early as October, so planning your trip within this window ensures more accessible conditions.

What notable sights will I see along the way?

The loop offers spectacular scenery and historical points of interest. You'll pass by the iconic Crystal Mill, a famous Colorado landmark, and the beautiful Lizard Lake. The route also features views of the Maroon Bells-Snowmass Wilderness, high alpine meadows bursting with wildflowers in summer, and vibrant fall colors in areas with aspen trees.

Is the Lead King Basin Loop suitable for beginners?

No, the Lead King Basin Loop is generally considered difficult. It's a challenging loop and a long day hike, featuring steep sections, loose rock, and significant elevation gain. The altitude, ranging from approximately 8,680 to 10,920 feet, also adds to the physical challenge, making it unsuitable for beginner hikers.

Is the Lead King Basin Loop dog-friendly?

Yes, the Lead King Basin Loop is located within the White River National Forest, which generally allows dogs. However, it's always best to keep your dog on a leash to protect wildlife and ensure a pleasant experience for all trail users. Please remember to pack out all pet waste.

Do I need a permit or pay an entrance fee for the Lead King Basin Loop?

Typically, day hiking on the Lead King Basin Loop within the White River National Forest does not require a specific permit or entrance fee. However, always check the latest regulations from the US Forest Service before your visit, especially if you plan to camp or access specific wilderness areas.

Where can I park to access the Lead King Basin Loop?

The Lead King Basin Loop is located near Marble, Colorado. Parking is generally available at various access points along the rugged dirt road that forms the loop. Specific trailhead parking areas may exist, but given its nature as a 4x4 road, many visitors park where convenient and safe along the route. Arriving early is always recommended during peak season.

Are there any specific regulations for hiking in the White River National Forest?

When hiking in the White River National Forest, it's important to follow Leave No Trace principles: pack out everything you pack in, stay on marked trails, respect wildlife, and properly dispose of waste. Campfires may be restricted during dry periods, and specific regulations apply if you venture into the adjacent Maroon Bells-Snowmass Wilderness.

Is there a recommended direction to hike the Lead King Basin Loop?

If you prefer to tackle the steepest sections early, consider starting the loop towards Lead King Basin first. The initial two miles in this direction are quite steep, followed by a more gradual climb to the peak around 4.5 miles. This can be a strategic way to manage the challenging elevation gain.

Does the trail intersect other well-known paths?

Yes, the Lead King Basin Loop intersects with and utilizes sections of several other paths. Notably, the route includes portions of the Lead King Basin Road, Lost Trail Road, and the Geneva Lake Trail. It also provides access to trailheads leading into the Maroon Bells-Snowmass Wilderness.

What kind of wildlife and plants can I expect to see?

The basin is home to abundant seasonal wildflowers, especially in the high alpine meadows during summer, with August being a prime viewing month. You may also have opportunities for wildlife viewing, as the area supports various species typical of high-altitude Colorado environments.

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