The best running trails in Colorado

If you are seeking a quick and easy jogging route, the Niwot Loop Trail offers a pleasant experience through varied terrain. You will find both paved sections and smooth dirt paths as you jog past cottonwood trees and two small ponds. This easy 0.9-mile (1.4 km) route has no elevation gain, taking about 8 minutes to complete, and provides scenic Front Range views, including glimpses of Niwot and Boulder.

You can conveniently access the trail from Monarch Park, where parking is typically available for visitors. The Niwot Loop Trail is generally accessible year-round, making it a reliable option for your routine. If you plan to bring your dog, please ensure they remain on a leash throughout your jog.

Despite its location near residential areas, the trail maintains a natural feel, enhanced by its cottonwood-lined sections and the presence of two small ponds. As you jog, you might spot wildflowers and local wildlife, particularly during the warmer months. The route serves as an ideal choice for a light jog or a warm-up, offering a refreshing outdoor break.

Prepare for a challenging jogging experience on the Manitou Incline and Barr Trail Loop. This difficult route covers 4.4 miles (7.1 km) and climbs a significant 1889 feet (576 metres), taking about 1 hour and 18 minutes to complete. You will begin with an intense ascent up the famous Manitou Incline, a steep path offering expansive views as you gain elevation. The terrain is demanding, pushing your limits with every step. After reaching the top, the trail transitions into a scenic descent along the Barr Trail, providing a welcome change of pace and softer footing. Enjoy the mountain air and the feeling of accomplishment as you navigate this unique loop.

To plan your visit, be aware that parking near the trailhead can be limited, especially on weekends; consider arriving early or using a shuttle service if available. There are often specific regulations for accessing the Manitou Incline, including timed entry reservations, so check official websites before you go. Starting your jogging adventure in the morning is advisable to avoid crowds and the heat of the day, particularly during warmer months. Always carry enough water and wear appropriate footwear for the varied terrain you will encounter.

This route is notable for its dual nature, combining the historic and physically demanding Manitou Incline with the more traditional mountain path of the Barr Trail. The Incline itself is a former railway bed, now a popular fitness challenge attracting visitors from all over. The Barr Trail offers a different perspective, winding through the forest and providing a gentler return. This combination makes the loop a distinctive regional highlight for those seeking a strenuous workout with rewarding views.

Prepare for a challenging jogging experience on the Mount Sanitas via Lion's Lair loop, a difficult route spanning 6.8 miles (10.9 km). You will gain 1564 feet (477 metres) in elevation, with an estimated duration of 1 hours and 44 minutes. As you ascend, you'll jog through a beautiful ponderosa forest, enjoying increasingly expansive views of high peaks and rolling landscapes. The trail's surface is generally smooth and well-graded, though you will encounter some rocky steps as you get closer to the summit. From the Mount Sanitas summit, you are treated to panoramic vistas of Boulder and the majestic Continental Divide, offering a rewarding payoff for your effort.

This route is often considered a less strenuous option compared to the main Mount Sanitas trail, making it a good choice if you are looking for a slightly easier ascent. The significant shade provided by the ponderosa pines makes this trail particularly appealing on warmer days, offering a cooler jogging environment. However, it is important to note that dogs are strictly prohibited on the Lion's Lair Trail section of this loop. This restriction is in place partly due to the active presence of mountain lions in the area, so plan your visit accordingly.

The Lion's Lair Trail, which forms part of this loop, is notable for its well-maintained path and the consistent shade it provides. This makes it a popular choice for those seeking a more sheltered experience while still aiming for the summit of Mount Sanitas. Keep an eye out for local wildlife, including Abert's squirrels, which are often spotted among the trees. The trail offers a unique blend of forest immersion and expansive views, setting it apart from other routes in the Boulder Open Space and Mountain Parks.

Prepare for an intense jogging workout on the Manitou Incline and Barr Trail Loop, a difficult route spanning 5.9 miles (9.6 km). You will conquer a substantial elevation gain of 1791 feet (546 metres), which typically takes around 1 hour and 45 minutes to complete. As you ascend the steep railroad tie steps of the Incline, you will catch glimpses of Colorado Springs and the striking red rock formations of Garden of the Gods. The descent on Barr Trail provides a different perspective, winding through granite boulders and offering expansive views towards Pikes Peak, making for a rewarding and varied experience.

Before you head out, remember that reservations are essential to access the Manitou Incline, so plan ahead. Paid parking is available nearby, or you can opt for the convenient free shuttle service. It is strongly advised not to descend the Incline directly due to its extreme steepness, so make sure you follow the designated Barr Trail for your return journey. This challenging route demands good physical preparation and careful planning to ensure a safe and enjoyable outing.

This unique loop combines the legendary Manitou Incline, known for its relentless climb and historic railroad ties, with the scenic Barr Trail. The Incline itself is a testament to engineering and endurance, providing a truly distinctive challenge. On your way down the Barr Trail, keep an eye out for the Ruxton Creek Waterfall, adding another natural highlight to your adventure. This trail is a local icon, offering both a rigorous physical test and stunning panoramic views that showcase the region's natural beauty.

Lace up for a moderate jogging experience on the North Table Loop Trail, a 7.7 miles (12.4 km) route that takes about 1 hour and 37 minutes to complete. You'll gain 898 feet (274 metres) in elevation as you navigate rolling grasslands and varied terrain, from smooth packed dirt to more challenging rocky sections. The trail offers expansive panoramic views of the majestic Front Range mountains and the distant Denver skyline, providing a sense of escape just outside the city. Make sure to pause at the viewpoint near Lichen Peak, the highest point in the park, for truly sweeping vistas. Keep an eye out for local wildlife, including prairie dogs and mule deer, as you make your way around the loop.

When planning your visit, be aware that the North Table Loop Trail is almost entirely exposed, offering very little shade. It is wise to plan your jog for cooler times of the day or year, and always remember to bring sunscreen to protect yourself from the sun. While restrooms and water fountains are available at the trailhead, you should carry enough water to last you for the entire duration of the route. The trail is accessible year-round, but spring and early summer are particularly rewarding for those hoping to see wildflowers in bloom.

This trail is a prime example of the unique geology of the area, formed by ancient lava flows that created the distinctive flat-topped mesa. The diverse ecosystem supports a variety of plant and animal life, making it a valuable natural resource close to urban areas. Its proximity to the city, combined with its challenging yet rewarding nature, makes it a popular choice for those seeking a quick but effective workout with impressive views. The North Table Loop Trail stands out as a destination that perfectly blends natural beauty with convenient access.

Embark on a challenging jogging adventure along the Waterton Canyon Trail via Colorado Trail, a route that stretches 12.6 miles (20.3 km) through a scenic canyon. As you jog, you will follow the South Platte River, enjoying continuous views of the water and impressive rock formations. This difficult trail features a total elevation gain of 798 feet (243 metres) and typically takes around 2 hours and 8 minutes to complete, offering a substantial workout amidst beautiful natural scenery. The journey culminates with striking views of the Strontia Springs Dam, a notable landmark at the turnaround point.

Before you head out, be aware that parking at the trailhead can fill up quickly, especially on weekends, so plan to arrive early to secure a spot. It is important to note that dogs are not permitted on this trail, a rule put in place to protect the abundant wildlife, particularly the bighorn sheep that frequent the area. Also, keep in mind that the canyon is a working facility for Denver Water and may experience closures for maintenance or environmental reasons, so it is wise to check for updates before your visit.

This route is renowned for its excellent opportunities to spot wildlife, with bighorn sheep often seen on the hillsides overlooking the trail. The canyon itself, with its craggy cliffs and diverse ecosystem, provides a unique backdrop for your jogging experience. It is a significant part of the Pike National Forest, offering a distinct blend of natural beauty and a rigorous physical challenge for those looking to push their limits.

Lace up for a refreshing jog around the Boulder Reservoir Loop Trail, a moderate 5.3 miles (8.5 km) route that typically takes about 57 minutes to complete. You'll experience a gentle elevation gain of 112 feet (34 metres) as you circle the water, offering continuous views of the iconic Flatirons and the expansive Front Range mountains. The path is mostly flat, providing a smooth surface for your run, though you will encounter one noticeable incline. This trail is perfect for those seeking a scenic workout with a mix of water and mountain vistas.

Before you head out, be aware that the Boulder Reservoir recreational area might charge an entrance fee, especially during certain times of the year, so plan accordingly. If you're bringing your dog, remember to check the specific regulations, as some areas or seasons may have restrictions. You will find convenient amenities like restrooms, water fountains, and benches available along the route for your comfort. Consider starting your jog early to enjoy the tranquil morning light over the water.

This popular route offers more than just a workout; it provides expansive views stretching from the eastern plains to the western peaks, creating a dynamic backdrop for your activity. The 700-acre Boulder Reservoir is a hub for local wildlife, so keep an eye out for various bird species and small mammals as you make your way around. It's an excellent choice for a recovery run or a beginner workout, thanks to its accessible terrain and engaging scenery.

Prepare for a challenging jogging experience on the Mount Sanitas and Lion's Lair Loop, a difficult route covering 6.6 miles (10.7 km) with a significant 1412 feet (430 metres) of elevation gain. You can expect to complete this loop in about 1 hour and 38 minutes. The trail offers a diverse landscape, transitioning from gentle switchbacks through pine forests to steeper, rocky descents. As you ascend via the Lion's Lair section, you will find a smoother, runnable surface winding through sparsely treed ridgelines.

From the summit of Mount Sanitas, you are rewarded with expansive vistas of Boulder, the Front Range high country, and distant Rocky Mountain peaks. This popular route is easily accessible from downtown Boulder, making it a convenient choice for a quick escape into nature. If you plan to jog with your dog, be aware that canine companions are generally prohibited on the Lion's Lair Trail section of this loop, so plan accordingly.

Keep an eye out for unique red sandstone uplifts and twisted trees along the Mount Sanitas portion of the route. These features contrast sharply with the grey granite mounds you will encounter on the Lion's Lair section. This loop provides a rewarding experience for runners seeking varied terrain and stunning views right on the edge of the city.

Prepare for a challenging jogging experience on the Castle Trail loop at Mount Falcon Park. This difficult 8.8-mile (14.2 km) route will have you gaining 1770 feet (540 metres) in elevation, typically taking around 2 hours to complete. As you navigate the varied terrain, from dirt singletrack to wide gravel paths, you will be treated to expansive panoramic views. Look out for the iconic Red Rocks Amphitheatre and the distant Denver skyline as you push through the climbs. The trail offers a rewarding workout with diverse scenery.

The Castle Trail loop is an accessible escape, located approximately 35 to 40 minutes from downtown Denver. You can enjoy this route year-round, but always check conditions before you go. Depending on the season, you might encounter snow, mud, or ice on the trail, so plan your gear accordingly. Remember that this is a multi-use path, so you will be sharing the trail with hikers, mountain bikers, and equestrians.

Beyond the natural beauty, this route offers a glimpse into history as you pass the intriguing Walker House Ruins. You will also see the cornerstone of a planned Summer White House, adding a unique historical layer to your jogging adventure. The significant climbs, especially if you start from the east trailhead, contribute to the trail's difficult rating and provide a substantial physical challenge.