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Routes
Mountain biking trails
United States
Colorado
Gunnison County

Lead King Basin Loop

Moderate

4.7

(3213)

6,799

riders

Lead King Basin Loop

02:23

19.7km

720m

Mountain biking

Tackle the moderate 12.2-mile Lead King Basin Loop mountain biking trail, featuring rugged jeep roads, alpine views, and the historic Crysta

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

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1

5.92 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 …

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B

19.7 km

End point

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Way Types & Surfaces

Way Types

18.9 km

658 m

155 m

Surfaces

19.6 km

< 100 m

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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 17 May

11°C

2°C

67 %

Additional weather tips

Max wind speed: 9.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

Where can I park for the Lead King Basin Loop?

The Lead King Basin Loop is located near Marble, Colorado. Parking is typically available at trailheads accessible from Marble, leading to FSR #315. Be aware that the road from Marble to FSR #315 traverses slick shale rock and should be avoided when wet.

Is the Lead King Basin Loop dog-friendly?

Yes, the Lead King Basin Loop is considered dog-friendly. Always ensure your dog is under control and follow any local regulations regarding leashes, especially as it's a multi-use trail shared with hikers, runners, and horseback riders.

What is the best time of year to mountain bike the Lead King Basin Loop?

The trail is especially beautiful during late summer when wildflowers are abundant, and in the fall for vibrant colors. In early summer, be prepared for several large stream or river crossings. The trail can be challenging when wet due to slick shale sections.

Are there any permits or fees required for the Lead King Basin Loop?

The Lead King Basin Loop is located within the White River National Forest. Generally, there are no specific permits or entrance fees required for day-use mountain biking on this trail. However, always check the latest regulations with the US Forest Service for any updates, especially if planning dispersed camping.

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

The terrain is primarily unmaintained jeep roads (FSR #315 and #314), characterized by its rugged and rocky nature. Expect "steep rocky" sections, "serious bedrock and loose rock," and areas that are "very narrow and extremely rocky," particularly between Lead King and Crystal City. Initial climbs can be steep and gain elevation quickly.

How difficult is mountain biking the Lead King Basin Loop?

This loop is generally rated as "Difficult" for mountain biking. It features challenging and rocky terrain, steep and sustained climbs, and the presence of loose rock and bedrock. Some sections are narrow shelf roads where passing can be difficult. While some descents are technical, you can choose to walk sections you find too challenging.

What notable features or landmarks will I see along the route?

One of the most notable landmarks is the historic Crystal Mill, offering excellent photo opportunities. You'll also pass through the remnants of Crystal City ghost town and enjoy spectacular views of mountains, meadows, and canyons, with Snowmass Mountain providing a towering backdrop.

Does the Lead King Basin Loop connect with other trails?

Yes, the route follows sections of several official trails. You'll find it intersects with parts of the Lead King Basin Road, Lost Trail Road, and the Geneva Lake Trail. It can also be combined with the west half of Devil's Punchbowl (Trail #27) to form a larger loop.

What should I be aware of regarding trail conditions?

The trail is primarily unmaintained jeep roads, so conditions can vary. Expect rugged, rocky surfaces and potential stream crossings, especially in early summer. The road from Marble to FSR #315 has slick shale and should be avoided when wet. The trail is also shared with high-clearance 4x4 vehicles, indicating the demanding nature of the road surface.

What kind of scenery can I expect on the loop?

The loop is renowned for its stunning scenery, bordering the Maroon Bells-Snowmass Wilderness. You'll experience majestic alpine landscapes, passing crystal-clear streams, towering mountain peaks, and lush fields of wildflowers. Fantastic mountain and valley views are a consistent feature for several miles of the loop.

Is the Lead King Basin Loop suitable for beginners?

No, due to its "Difficult" rating, rugged and rocky terrain, and steep climbs, the Lead King Basin Loop is not recommended for beginners. It requires a good level of mountain biking experience and technical skill.

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