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55.8 km
~3 days
1646 m
Multi-Day
“Traverse Colorado's wilderness on a scenic 35-mile hike with historic Trappers Lake and thrilling Devil's Causeway.”
Embarking on the Trappers Lake - Devil's Causeway Loop, hikers will traverse approximately 56 kilometers (about 35 miles) of diverse terrain with an elevation gain of around 1600 meters (approximately 5250 feet). This loop trail, nestled in the heart of the Flat Tops Wilderness near Garfield County, Colorado, offers a medium difficulty rating, making it accessible to hikers with a reasonable level of fitness and experience.
Getting to the Trailhead
To reach the trailhead, hikers can drive to the vicinity of Trappers Lake, which is the nearest significant landmark. From the town of Yampa, take County Road 7 north for about 40 kilometers (25 miles) until you reach the Trappers Lake Road. Follow this road for another 16 kilometers (10 miles) to the trailhead parking area. Public transport options are limited in this remote area, so a personal vehicle or a rented car is the most practical way to arrive at the starting point.
Navigating the Trail
Once on the trail, hikers will be greeted by the expansive Trappers Lake, often referred to as the "Cradle of Wilderness," due to its historical significance in the wilderness preservation movement. The trail meanders through subalpine forests and meadows, offering breathtaking views of the surrounding Flat Tops. Hikers can use the HiiKER app to navigate the loop, ensuring they stay on the correct path and can anticipate upcoming changes in terrain or elevation.
Landmarks and Natural Features
As the trail ascends, hikers will encounter the iconic Devil's Causeway, a narrow land bridge with steep drop-offs on either side. This feature is a highlight of the hike and provides an adrenaline-pumping experience for those who dare to cross it. The causeway is located approximately halfway through the loop, and crossing it requires caution, especially in adverse weather conditions.
The loop continues through a landscape dotted with alpine lakes and streams, providing ample opportunities for wildlife sightings, including elk, mule deer, and various bird species. The diverse flora along the trail includes wildflowers, aspen groves, and evergreen forests, which can be especially stunning during the fall when the aspen leaves turn a vibrant yellow.
Historical Significance
The Flat Tops Wilderness area is steeped in history, with Trappers Lake being a pivotal location in the early conservation movement. It was here that Arthur Carhart, a United States Forest Service official, was inspired to propose the concept of wilderness preservation in the 1920s, leading to the eventual establishment of the Wilderness Act in 1964.
Preparation and Planning
Hikers should be well-prepared for this multi-day trek, bringing appropriate gear for overnight camping, as there are several designated campsites along the route. It's essential to pack sufficient food, water, and clothing layers to adapt to the unpredictable mountain weather. A map and compass, or the HiiKER app with downloaded maps, are crucial for navigation, as cell service can be unreliable in the wilderness.
Given the trail's length and elevation gain, it's advisable to plan for at least 3 to 4 days to complete the loop comfortably, allowing time to rest and enjoy the natural beauty of the area. Always check the local weather forecast and trail conditions before setting out, and be aware that snow can linger on the trail well into the summer months.
By respecting the wilderness and practicing Leave No Trace principles, hikers can ensure that the Trappers Lake - Devil's Causeway Loop remains a pristine and enjoyable experience for all who seek adventure in the Colorado backcountry.
What to expect?
Activity types
The Trappers Lake - Devil's Causeway Loop is 55.79 km, or about 34.7 miles, with 1,646 m of elevation gain, roughly 5,400 feet. Most backpackers split it into 2 to 4 days depending on pace, weather, and how much time is spent around Trappers Lake, the Chinese Wall area, and the exposed crossing at Devil's Causeway.
This route is generally rated medium, but the numbers make it a serious outing: nearly 56 km with 1,646 m of climbing. The biggest challenge is not just distance but the combination of high-elevation travel in the Flat Tops Wilderness, long days between trailheads, and the exposed rock spine at Devil's Causeway, which sits around 11,600 feet.
Parking for the most common Devil's Causeway access is at the Stillwater Trailhead near the end of Forest Service Road 900 southwest of Yampa. The Forest Service notes that from Yampa, County Road 7 becomes gravel after 6.5 miles and continues about 10 more miles to the trailhead, and that the lot can fill early, so designated parking only is important.
Dogs are allowed on the Trappers Lake - Devil's Causeway Loop, but they must be under immediate voice control or leashed in the Devil's Causeway area. Flat Tops Wilderness regulations also prohibit uncontrolled dogs that harass wildlife, people, or property, so this is not a casual off-leash hike, especially on the narrow exposed sections.
The usual hiking season for the Devil's Causeway area is July through October. That timing matters because the route is high in the Flat Tops Wilderness, where snow can linger well into early summer and afternoon thunderstorms are a real hazard once the trail climbs above tree line near the causeway and plateau.
Yes. The Forest Service describes Devil's Causeway as a narrow strip of rock about 3 feet wide with drop-offs of hundreds of feet on both sides, and it warns that crossing involves significant exposure. Hikers comfortable with distance may still find this to be the psychological crux of the entire loop.
Camping is possible on a multi-day trip, but Flat Tops Wilderness rules matter. No camping is allowed within 100 feet of lakes, streams, or trails in the Devil's Causeway area, and dispersed camping is also prohibited within a quarter mile of Trappers Lake and the nearby campgrounds, so campsite selection needs to be deliberate.
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