293
runners
66
runs
Jogging in San Juan National Forest offers extensive trail systems across 1.8 million acres of diverse landscapes in Southwest Colorado. The region features dramatic mountains, lush forests, valleys, and canyons, providing varied terrain for runners. Trails range from flat paths to steep, rocky routes with significant elevation gains. This vast area provides a wide range of running experiences for all fitness levels.
Last updated: May 10, 2026
31
runners
10.7km
01:50
750m
750m
Prepare for a challenging jogging experience on the Ice Lakes Trail, a difficult 6.7 miles (10.7 km) route that climbs 2447 feet (746 metres). You can expect to complete this…
13
runners
14.7km
01:57
400m
400m
The Dry Fork Loop Trail offers a challenging jogging experience through the San Juan National Forest. As you navigate this difficult 9.1-mile (14.7 km) route, you will encounter varied terrain,…

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12
runners
9.03km
01:14
310m
310m
Embark on a challenging jogging route along the Colorado Trail to Gudy's Rest, covering 5.6 miles (9.0 km) with a significant elevation gain of 1017 feet (310 metres). You will…
10
runners
8.22km
01:13
530m
530m
If you are ready for a demanding jogging experience, the Castle Rock via Elbert Creek Trail offers a significant challenge and rewarding views. This difficult route covers 5.1 miles (8.2…
10
runners
9.90km
01:43
650m
650m
The Engineer Mountain via Pass Trail offers a difficult jogging experience, covering 6.1 miles (9.9 km) with a significant elevation gain of 2143 feet (653 metres). You will navigate through…
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The trail from here is a mix of singletrack and doubletrack which climbs up towards the Junction Creek Trail (Colorado Trail) to the north. Taking a right at the intersection will lead you to Gudy's Rest, while taking a left will keep you headed for the CT.
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This scenic viewpoint is named for Gudy Gaskill, the so-called Mother of the Colorado Trail. So it is not surprising that is located right on the famous long-distance trail, that stretches from Durango to almost Denver. It’s said, this high spot was one of her favorite places, with stunning views over the San Juan Mountains.
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Ice Lake is a stunning alpine lake that is perfect for a break. You are surrounded by the majestic peaks of Golden Horn, Pilot Knob and Ulysses S Grant Peak. The best time to visit this high alpine lake is from July through August, but in a high snow year, bring winter gear even in summer.
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Here starts the 3.79 miles long trail to the Ice Lakes. There are about 800 meters to overcome.
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At 12,968 feet, Engineer Mountain doesn't quite qualify as a Colorado 13er. That being said, it is one of the most unique and fun mountains in the San Juans. The ridge up to the summit involves some class 2 and class 3 moves, but the route is clear and easy to follow. This is a great route to introduce someone to class 3 travel, and you are not lacking any views once you reach the summit.
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From here you can run up Castle Rock for epic views of Engineer and the San Juans, or follow Elbert Creek up to the eastern ridge of the Hermosa Creek Valley. From there you have a choice of epic runs along the ridgeline or delving into the forested river valleys below.
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Castle Rock is part of a long line of cliffs, known as Hermosa Cliffs, near Purgatory Ski Resort. Castle Rock sits at an elevation of 10,441 feet and offers great views of the Needle Mountains from the summit.
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The Elbert Creek Trail leads you into picturesque alpine scenery with Elbert Creek bubbling next to you. The trail meets with the Castle Rock Trail which takes you all the way up to the summit of Castle Rock.
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San Juan National Forest offers a vast network of trails, with over 60 dedicated running routes available on komoot. This extensive system provides diverse terrain across 1.8 million acres, catering to various fitness levels.
Yes, while many routes are challenging, there are options suitable for easier runs. The forest offers trails ranging from flat paths to more demanding ascents. For a more accessible experience, the 10.8-mile Animas River Trail in Durango (outside the immediate forest but nearby) is a paved route with scenic river views, often enjoyed by families.
For those seeking a challenge, the San Juan National Forest has many difficult trails. The Ice Lakes Trail is a demanding 6.6-mile route leading to stunning alpine lakes. Another difficult option is the Dry Fork Loop Trail, a 9.1-mile path offering scenic views from Gudy's Rest with significant elevation gain.
Many trails within San Juan National Forest are dog-friendly, but it's always best to check specific trail regulations before you go. Generally, dogs are welcome on leash, especially in wilderness areas. Please ensure your dog is well-behaved and that you pack out all waste to preserve the natural environment.
Yes, the San Juan National Forest features several loop trails perfect for running. The Dry Fork Loop Trail is a popular 9.1-mile option that provides a complete circuit with rewarding views.
The forest boasts dramatic mountains, lush forests, valleys, and canyons. You might encounter stunning alpine lakes like Ice Lake or Island Lake. Other notable features include mountain passes such as Red Mountain Pass and panoramic viewpoints like View on Grenadier Range. The diverse terrain ensures a constantly changing and beautiful backdrop for your run.
The best time to jog is typically from late spring through early fall (May to October) when trails are clear of snow and wildflowers are abundant. Summer offers pleasant temperatures at higher elevations, but be prepared for afternoon thunderstorms. Fall brings spectacular foliage, making it a very scenic time to run. Winter running is possible on some lower elevation trails, but many higher routes will be snow-covered.
Absolutely. San Juan National Forest is home to a wide array of wildlife, including foxes, bears, bighorn sheep, and nearly 300 species of birds. Early mornings or late evenings are often the best times for wildlife viewing. Remember to maintain a safe distance and never approach animals.
Runners frequently praise the stunning natural beauty and the variety of terrain available. The extensive trail system allows for everything from gentle forest runs to challenging mountain ascents, all set against a backdrop of dramatic peaks and pristine wilderness. The sense of solitude and connection with nature is also highly valued.
Generally, permits are not required for day-use jogging on most trails in San Juan National Forest. However, if you plan to camp overnight or enter specific wilderness areas, different regulations and permits may apply. Always check with the local Forest Service office for the most current information regarding your chosen route.
Many popular running routes have designated parking areas at their trailheads. For example, trails like the Colorado Trail to Gudy's Rest and Engineer Mountain via Pass Trail typically have accessible parking. It's advisable to arrive early, especially on weekends, as popular trailheads can fill up quickly.
Even in summer, weather can change rapidly in the mountains. It's recommended to wear layers, including moisture-wicking clothing, and bring a light jacket or rain shell. Sun protection (hat, sunglasses, sunscreen) is crucial due to the high altitude. Sturdy trail running shoes are essential for the varied terrain, and carrying enough water is vital.


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