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Routes
Hiking trails & Routes
United States
Colorado
Garfield County

Devils Causeway and Causeway Lake

Hard

3.3

(22)

88

hikers

Devils Causeway and Causeway Lake

05:27

17.0km

730m

Hiking

Embark on the Devils Causeway and Causeway Lake hike, a challenging route that spans 10.6 miles (17.0 km) with a significant elevation gain of 2394 feet (730 metres). You can expect to spend around 5 hours and 27 minutes navigating diverse landscapes, from forested valleys to steep talus slopes. The…

Last updated: April 23, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Flat Tops Wilderness

Routt National Forest

Waypoints

A

Start point

Get Directions

1

8.66 km

Causeway Lake

Highlight • Lake

Causeway Lake is a stunning alpine lake with towering rock walls and beautiful pine forest around the lake shore. Take your time and spend the night in the backcountry to enjoy this pristine nature to the fullest.

Tip by

2

15.8 km

Devils Causeway Loop Trail

Highlight • Trail

This loop trail at the edge of the stunning Flat Tops Wilderness take you through lush pine forest and offers great views over the Stillwater Reservoir while you climb all …

Tip by

B

17.0 km

End point

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Way Types & Surfaces

Way Types

8.50 km

8.42 km

Surfaces

8.50 km

8.42 km

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Elevation

Elevation

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Weather

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Today

Wednesday 27 May

11°C

1°C

44 %

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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 is the trailhead for the Devils Causeway and Causeway Lake hike?

The main trailhead for this route is located near Stillwater Reservoir in the Flat Tops Wilderness. You'll find parking available there, but it can fill up quickly during peak season.

Is the Devils Causeway trail suitable for beginners or those with a fear of heights?

This trail is rated as difficult, primarily due to the challenging crossing of the Devil's Causeway itself. This section is a very narrow land bridge, only 3 to 4 feet wide in places, with significant drop-offs on both sides. It's not recommended for beginners or anyone with a strong fear of heights. Many experienced hikers cross this section on their hands and knees due to the exposure.

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

The best time to hike the Devils Causeway and Causeway Lake trail is typically from late June through September. During this period, the snow has usually melted, and the weather is more stable. Wildflowers are abundant in the summer months. Always check weather conditions before heading out, as rapid changes are common in the Flat Tops Wilderness.

Are dogs allowed on the trail?

Yes, dogs are generally allowed on trails within the Flat Tops Wilderness. However, they must be kept on a leash to protect wildlife and ensure a pleasant experience for all hikers. Please remember to pack out all pet waste.

Do I need a permit or is there an entrance fee for the Flat Tops Wilderness?

No, there are typically no permits required or entrance fees to hike the Devils Causeway and Causeway Lake trail within the Flat Tops Wilderness. However, it's always a good idea to check the USDA Forest Service website for any current regulations or fire restrictions before your visit.

What notable landmarks or natural features will I see along the way?

The most iconic feature is the Devil's Causeway itself, a dramatic narrow land bridge. You'll also pass the serene Causeway Lake, which is a beautiful spot for a break. The trail offers expansive 360-degree panoramic views of the Flat Tops Wilderness, including the Stillwater Reservoir and surrounding volcanic plateaus.

What is the terrain like on this hike?

The terrain varies significantly. The initial sections near Stillwater Reservoir and up to Little Causeway Lake are less strenuous. Beyond Little Causeway Lake, the trail steepens considerably, involving switchbacks and talus slopes. The landscape transitions from forested valleys and lush meadows to exposed ridgelines and the unique flattened basaltic domes characteristic of the Flat Tops Wilderness.

Are there any alternative routes or loop options for this trail?

Yes, while the direct route to the Causeway and back is popular, there is also a longer 10 to 10.5-mile loop option. This loop returns to the reservoir via Mosquito Lake, offering diverse scenery and a more extensive exploration of the Flat Tops Wilderness.

Does this trail intersect with other well-known paths?

Yes, the route also passes through sections of the East Fork Trail, Devils Causeway Trail, Bear River Trail, and North Derby Trail, offering connections to a broader network within the wilderness.

What should I bring for a hike on the Devils Causeway and Causeway Lake trail?

Given the trail's difficulty and exposure, it's crucial to be well-prepared. Bring plenty of water, high-energy snacks, sturdy hiking boots, layers of clothing (weather can change rapidly), rain gear, sun protection (hat, sunscreen), a map and compass or GPS device, and a first-aid kit. Trekking poles can be very helpful, especially on the steep and rocky sections.

Are there any family-friendly hiking options near Causeway Lake that avoid the Devil's Causeway exposure?

Absolutely. While the full route to the Devil's Causeway is challenging, the initial section of the trail to Causeway Lake (also known as Little Causeway Lake) is much less strenuous and offers a beautiful, family-friendly experience. It's about 1.5 miles in and provides a peaceful, idyllic spot for a picnic or rest without the extreme exposure of the Causeway itself.

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