The best running trails in Horsetooth Mountain Open Space
3.7
(3)
1,894
runners
176
runs
Jogging in Horsetooth Mountain Open Space offers diverse landscapes and an extensive trail system west of Fort Collins, Colorado. The region features a mix of grasslands and mountain mahogany shrublands, providing a dynamic natural environment. Joggers can expect hilly and uneven terrain, with elevations ranging from 5,430 to 7,255 feet. Notable features include Horsetooth Rock, a prominent landmark, and Horsetooth Falls, a 20-foot waterfall.
Best jogging routes in Horsetooth Mountain Open Space
- The most popular jogging route is Horsetooth Rock – Stout Trail loop from Horsetooth Mountain Open Space, a 15.8 miles (25.4 km) trail that takes 3 hours 39 minutes to complete. This challenging route offers panoramic views from Horsetooth Rock.
- Another top favourite among local runners is Stout Trail loop from Horsetooth Mountain Open Space, a difficult 10.8 miles (17.4 km) path. This route features significant elevation changes through varied terrain.
- Local runners also love the Horsetooth Mountain loop from Horsetooth Mountain Open Space, a 7.8 miles (12.6 km) trail leading through the heart of the open space, often completed in about 1 hour 53 minutes.
- Jogging in Horsetooth Mountain Open Space is defined by grasslands, mountain mahogany shrublands, and the iconic Horsetooth Rock. The network offers options for different ability levels, from moderate paths to challenging climbs.
- The routes in Horsetooth Mountain Open Space are highly rated by the komoot community with an average score of 3.8 stars from 5 reviews. More than 1600 runners have used komoot to explore Horsetooth Mountain Open Space's varied terrain.
Last updated: May 13, 2026
26
runners
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
12
runners
13.4km
01:47
380m
380m
Hard run. Very good fitness required. Mostly accessible paths. Some sure footedness required.
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5
runners
9.13km
01:16
290m
290m
Hard run. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
26
runners
12.8km
01:35
190m
190m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
15
runners
Hard run. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
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Tips from the Community
The East Valley Trail runs parallel to the main road through a beautiful open meadow. You get fantastic views of the striking red cliffs that separate the meadow from the shores of Horsetooth Reservoir, but there are several short spur trails along the East Valley Trail that will take you down to various inlets. This trail is relatively flat and accessible and is also open to hikers and horses.
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The Indian Summer Trail is a short, fun loop off of the main Blue Sky Trail. Most ride this loop clockwise, ascending a few hundred feet of low-grade switchbacks before reaching a flowy descent.
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The Blue Sky Trail is a generally casual, super fun trail along a ridge, just south of Horsetooth Reservoir. This long trail runs north-south from Horsetooth Reservoir, through Rim Rock Open Space to the Devil's Backbone Open Space. This section of trail begins at the trailhead near Horsetooth and ends where the Indian Summer Loop begins. There is a set of steps in this section of trail that most walk, but advanced riders looking to challenge themselves might be able to find a line down. Other than this short obstacle, this section of the Blue Sky Trail doesn't have any very steep grades; it is flowy and fun with lots linkups with other trails available.
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A great spot to take a break and enjoy the view of the flat landscape that includes Loveland to the east, and the mountainous wonder of Roosevelt National Forest to the west.
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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 also where the intersection for the trail to Horsetooth Falls is.
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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 popular trails like the Arthurs Rock Trail, the South Valley Loop, and the Overlook Trail. This lot can fill up quickly, especially on beautiful weekends in the spring, summer, and fall so be sure to arrive early and try to carpool with a hiking buddy!
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The South Valley Loop is an incredibly popular hiking and mountain biking trail on the southern end of Lory State park. This half of the loop is on the reservoir side and generally flat with rolling hills through a meadow. You get great views of the hills where Arthur's Rock can be found across the valley from striking red cliffs closer to the water.
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Dixon Cove is one of many narrow coves and inlets along the eastern side of Lory State Park. You can walk down to the water and cool off on hot summer days in Horsetooth Resivior. You also get nice views of Arthur's Rock and the unique red ridge line in the park.
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Frequently Asked Questions
How many running routes are available in Horsetooth Mountain Open Space?
Horsetooth Mountain Open Space offers a diverse network of 11 running routes. These trails range from moderate to difficult, providing options for various fitness levels. You'll find a mix of grasslands and mountain mahogany shrublands, with elevations from 5,430 to 7,255 feet.
Are there any family-friendly running trails in Horsetooth Mountain Open Space?
While many trails in Horsetooth Mountain Open Space are considered difficult due to significant elevation changes and uneven terrain, there are some moderate options. For a less strenuous experience, consider routes that avoid the steepest climbs to Horsetooth Rock. Always check the trail difficulty and length to ensure it's suitable for your family's experience level.
What kind of terrain and views can I expect on the jogging trails?
Joggers can expect hilly and uneven terrain, with options ranging from mostly flat paths to steep sections with rocks and roots. The open space offers stunning panoramic views of the Front Range and Horsetooth Reservoir, especially from higher elevations like Horsetooth Rock. You'll run through a mix of grasslands and mountain mahogany shrublands.
Are dogs allowed on the running trails in Horsetooth Mountain Open Space?
Yes, dogs are generally allowed on trails in Horsetooth Mountain Open Space. However, they must be kept on a leash at all times to protect wildlife and ensure the safety of other visitors. Always remember to clean up after your pet.
Are there any circular running routes in the area?
Yes, many of the running routes in Horsetooth Mountain Open Space are designed as loops, allowing you to start and finish at the same point. For example, the Dixon Cove loop from Horsetooth Mountain Open Space is a difficult 13.3 km (8.3 miles) route that offers a great circular running experience.
What are some notable landmarks or attractions I can see while running?
You'll encounter several iconic landmarks. The most recognizable is Horsetooth Rock, the highest point in the open space, offering spectacular views. Another highlight is Horsetooth Falls, a picturesque 20-foot waterfall, particularly impressive in late spring. You can even access a trail behind the falls.
Is there parking available at the trailheads?
Yes, Horsetooth Mountain Open Space has designated parking areas at its trailheads. It's advisable to arrive early, especially on weekends, as parking lots can fill up quickly. There may be a fee required for parking, so be prepared.
What is the best time of year to go running in Horsetooth Mountain Open Space?
The open space offers different experiences throughout the year. Spring brings wildflowers and the best views of Horsetooth Falls due to snowmelt. Autumn provides vibrant fall colors. Summers can be hot, so early morning or late afternoon runs are recommended. Winter running is possible, but trails may be icy or snowy, requiring appropriate gear.
What do other runners enjoy most about jogging in Horsetooth Mountain Open Space?
The running routes in Horsetooth Mountain Open Space are highly rated by the komoot community, with an average score of 3.8 stars from 5 reviews. Runners often praise the challenging terrain, the rewarding panoramic views, and the iconic landmarks like Horsetooth Rock and Horsetooth Falls. The variety of trails also caters to different fitness levels.
Are there any easy or beginner-friendly running routes?
While many routes are rated difficult, there are moderate options available for those seeking a less intense run. For example, the Arthurs Rock Trailhead loop from Clarendon Hills is a moderate 9.8 km (6.1 miles) route, offering a good option for beginners or those looking for a more relaxed pace.
Are permits required for jogging in Horsetooth Mountain Open Space?
Generally, a daily entrance fee or an annual pass is required to access Horsetooth Mountain Open Space. This fee helps maintain the trails and facilities. For the most current information on fees and passes, it's best to check the official Larimer County Natural Resources website: larimer.gov.
Most popular routes in Horsetooth Mountain Open Space
Most popular attractions in Horsetooth Mountain Open Space
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