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Routes
Hiking trails & Routes
United States
Colorado
Larimer County

Mill Creek Trail to Horsetooth Rock Trail

Moderate

2.6

(19)

81

hikers

Mill Creek Trail to Horsetooth Rock Trail

03:36

11.2km

490m

Hiking

Hike the Mill Creek Trail to Horsetooth Rock Trail, a moderate 6.9-mile route with 1,598 feet of gain and panoramic views.

Last updated: February 26, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Waypoints

A

Start point

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1

6 m

Arthur's Rock Trailhead

Highlight • Parking

The Arthurs Rock Trailhead is located at the very end of Lodgepole Drive. There is a large parking area, trail information, and vault toilets. From this trailhead you can access …

Tip by

2

10.6 km

After climbing up the hilly meadow on the well-worn Horsetooth Rock Trail you hit a small ridge line where you get great panoramic views of the surrounding area. This is …

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B

11.2 km

End point

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Way Types & Surfaces

Way Types

8.43 km

2.73 km

Surfaces

11.1 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 (2,170 m)

Lowest point (1,710 m)

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Weather

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Tuesday 2 June

23°C

10°C

70 %

Additional weather tips

Max wind speed: 8.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

What is the estimated hiking time for this route?

The komoot tour data suggests this particular route, the Mill Creek Trail to Horsetooth Rock Trail, takes approximately 3 hours and 35 minutes to complete. This duration can vary based on your pace, stops for photos, and how long you spend enjoying the views at Horsetooth Rock.

Where can I park and access the trailhead for this hike?

The route begins near the Arthur's Rock Trailhead. This area typically offers parking, but it's always a good idea to arrive early, especially on weekends, as spots can fill up quickly.

What kind of views and natural features will I encounter?

You'll experience a diverse landscape, from quintessential Colorado meadows and tranquil pine forests to exposed hillsides and 'rock gardens' with impressive boulder formations. The highlight is undoubtedly Horsetooth Rock itself, offering magnificent panoramic views of the Colorado plains, Horsetooth Reservoir, and distant peaks like Longs Peak and Pikes Peak. You'll also pass by the Intersection of Horsetooth Rock and Horsetooth Falls trails, which provides great views.

What is the terrain like on the way to Horsetooth Rock?

The terrain is quite varied. You'll hike through exposed hillsides and forested areas, encountering 'rock gardens' with boulders. Expect consistently steady inclines and some steep sections. Near the base of Horsetooth Rock, there are slickrock sections that may require some route finding and even light scrambling, where you might need to use your hands to reach the summit. Loose rocks and tree roots are also common along the path.

Is this trail suitable for beginners?

While the overall route is graded as 'moderate' due to its length and elevation gain, the final ascent to Horsetooth Rock involves a significant climb and some challenging scrambling. Hikers should have a reasonable level of fitness and be prepared for varied terrain, including slickrock and potentially loose footing. Beginners with good stamina might manage, but should be aware of the more strenuous sections.

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

Spring and fall generally offer the most pleasant hiking conditions with mild temperatures and beautiful scenery. Summer can be hot, especially on exposed sections, so an early start is recommended. In colder months, icy conditions are possible, particularly on higher elevations and shaded areas, which might necessitate microspikes for safety.

Are there any fees or permits required to hike here?

Yes, this trail is located within Horsetooth Mountain Open Space, which is managed by Larimer County. There is an entrance fee required to access the park. You can find current fee information and purchase passes on the official Larimer County website: larimer.gov.

Is this trail dog-friendly?

Yes, dogs are generally allowed on trails within Horsetooth Mountain Open Space, including this route. However, they must be kept on a leash at all times to protect wildlife and ensure the safety of other visitors. Please remember to pack out all pet waste.

Does this route connect with other trails?

Yes, this route incorporates sections of several well-known paths within Horsetooth Mountain Open Space. You'll hike along portions of the Mill Creek Trail, Westridge Trail, Towers Trail, South Ridge Trail, and the Horsetooth Rock Trail itself. This network allows for various loop options and connections to other areas, such as Horsetooth Falls.

What should I pack for this hike?

Given the varied terrain and elevation, it's wise to pack plenty of water, snacks, and layers of clothing. Sturdy hiking boots with good ankle support are recommended. Sun protection (hat, sunscreen) is essential for exposed sections. Depending on the season, consider microspikes for icy conditions. A map or GPS device is also helpful for navigation, especially near the base of Horsetooth Rock where some route finding might be needed.

Is it possible to visit Horsetooth Falls on this hike?

While this specific komoot route focuses on reaching Horsetooth Rock, the Intersection of Horsetooth Rock and Horsetooth Falls trails is a point of interest along the way. Many hikers choose to extend their trip to include a visit to Horsetooth Falls, which is a popular side excursion from this junction. Be sure to factor in additional time and distance if you plan to include the falls.

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