The best running trails in Pitkin County

The Four Pass Loop is a classic Colorado trail running experience, renowned for its dramatic alpine scenery and challenging terrain. You'll traverse high mountain passes above 12,000 feet, winding through vibrant aspen groves, rocky sections, and flower-filled basins, all while surrounded by the stunning maroon-rock peaks of the Elk Mountains. Expect breathtaking vistas of iconic landmarks like Maroon Lake and Crater Lake, with each pass offering a unique perspective of the wilderness.

This difficult 26.4-mile (42.4 km) route involves a substantial 7315 feet (2230 metres) of elevation gain, making it a serious undertaking that typically takes around 7 hours and 9 minutes for experienced joggers. Given the high altitude and exposure, careful weather monitoring is crucial, as conditions can change rapidly. Parking at Maroon Bells often requires reservations or shuttle access, so plan ahead for your trailhead logistics.

Considered a bucket-list item for many outdoor enthusiasts, the Four Pass Loop is particularly famous for its spectacular wildflowers in the summer. While many backpackers complete it over several days, it's also a popular challenge for advanced trail runners seeking to complete the entire loop in a single, long day. The trail offers an unparalleled opportunity to immerse yourself in the diverse landscapes of the Colorado high country.

The East of Aspen Trail offers a delightful and accessible jogging experience, winding alongside the Roaring Fork River. You'll encounter a mix of paved paths, crushed gravel, and soft dirt, with picturesque views of meadowlands, cliffs, and vibrant Aspen groves, particularly stunning in the fall. This moderate route covers 4.0 miles (6.4 km) with a gentle 141 feet (43 metres) of elevation gain, typically taking about 41 minutes to complete.

Planning your visit is straightforward, as the trail is easily accessible and offers parking options. It's a popular multi-use path, welcoming joggers, walkers, and cyclists, and is also a dog-friendly running route in Aspen, provided pets are leashed. The trail is enjoyable year-round, though autumn offers spectacular colors, and some sections are maintained even in winter.

Beyond its scenic beauty, the East of Aspen Trail provides access to the North Star Nature Preserve, a prime spot for wildlife spotting while jogging. It's also part of Aspen's extensive trail network, connecting to other paths like the Snyder Park Trail and extending towards Independence Pass, making it a versatile option for various outdoor activities and accessible for jogging with a stroller.

The Maroon-Snowmass Trail to Crater Lake offers a classic Colorado jogging experience, leading you through stunning alpine scenery. Starting from the shores of Maroon Lake, the path quickly ascends through dense pine forests and vibrant aspen groves, providing continuous, breathtaking views of the iconic Maroon Bells. Expect a challenging route with rocky sections and uneven footing, culminating in the serene Crater Lake, which often mirrors the surrounding peaks.

To tackle this difficult 3.7-mile (5.9 km) trail with its 677 feet (206 metres) of elevation gain, plan for about 57 minutes of jogging. Due to its popularity, especially during the peak season from mid-May to October, you'll need to secure shuttle reservations or arrive very early. This ensures you can access the trailhead and enjoy the route before it gets too crowded.

Considered a rite of passage for many Colorado locals, this trail is more than just a jog; it's an immersion into one of North America's most photographed landscapes. It also serves as a crucial segment of the longer Maroon-Snowmass Trail, opening up possibilities for more extensive adventures like the Four Pass Loop for those seeking multi-day backpacking challenges.

The Mount Sopris Trail offers a diverse and challenging experience, starting with gentle paths through aspen groves and open meadows before ascending into rugged alpine terrain. You'll pass the picturesque Thomas Lakes, which provide stunning reflections of Mount Sopris, before the trail transforms into a steep, rocky climb with scree and talus. This route is a difficult 13.6-mile (21.9 km) journey with 4188 feet (1276 metres) of elevation gain, typically taking around 3 hours and 33 minutes for a dedicated jogger.

Planning your visit requires attention to the trail's changing character. While the lower sections are suitable for jogging, the upper reaches are exceptionally challenging and better suited for strenuous hiking, demanding sure-footedness and sturdy footwear. The trail is dog-friendly, requiring leashes. The safest and most scenic time to go, especially for summit attempts, is during July and August when wildflowers are abundant and conditions are generally more favorable.

Mount Sopris itself is a prominent landmark in the Elk Range, part of the Maroon Bells-Snowmass Wilderness, towering nearly 7,000 feet above the Roaring Fork Valley. Its twin summits reach 12,965 feet, making it a significant peak with one of Colorado's biggest vertical rises from base to peak. The trail offers a journey through diverse ecosystems, from dense forests to high alpine environments, and features unique geological formations like extensive rock glaciers.

The Rim Trail South in Snowmass Village offers a fantastic jogging experience, guiding you along a singletrack dirt path with switchbacks and an exciting traverse across a shaley hillside. You'll be rewarded with stunning views of the Elk Mountains, Snowmass Village, and surrounding valleys, especially as you approach Spiral Point, a notable viewpoint. During peak season, the trail is also celebrated for its vibrant wildflower displays and picturesque aspen groves, making the 3.5-mile (5.7 km) journey a visual treat.

This moderate route involves 635 feet (193 metres) of elevation gain, requiring about 44 minutes to complete, making it an excellent choice for an aerobic workout. It's a multi-use trail, so expect to share the path with mountain bikers and hikers. Dogs are welcome on leash, but be mindful of potential wildlife, including bears. You can jog it as an out-and-back to Spiral Point or extend your adventure by connecting to the Rim Trail North.

Known as a "Roaring Fork Valley Classic," the Rim Trail South is celebrated for its challenging yet rewarding nature. Spiral Point, a key landmark, provides 360-degree panoramic views that truly capture the essence of the Colorado Rockies. This trail is a local favorite for its combination of physical challenge and spectacular scenery, offering a memorable outdoor experience.