Highlight • Mountain Pass
Cycling
5.0
(3)
Gravel riding
5.0
(1)
Boreas Pass Gravel is a historic high mountain pass in central Colorado, traversing the Rocky Mountains at an elevation of 3,499 meters (11,481 feet). Situated on the Continental Divide at the crest of the Front Range, it forms the border between Park and Summit counties, connecting the historic village of Como to the popular ski resort town of Breckenridge via a renowned unpaved gravel road.
Visitors consistently praise the breathtaking panoramic views from the pass, which include the expansive Blue River Valley, the majestic Tenmile Range, and prominent peaks like Mount Silverheels. The journey along the gravel road is equally captivating, winding through dense aspen forests and open meadows that burst with wildflowers in summer and transform into a "glowing tunnel of gold" during the autumn foliage season.
Before heading out, it's important to know that the route is primarily a gravel road, Forest Service Road 33. While generally suitable for two-wheel-drive vehicles in good weather, conditions can vary, and the pass closes to vehicle traffic in winter. Hikers and cyclists should be prepared for a steady railroad grade climb, and it's always wise to check current Boreas Pass Gravel road conditions, as sections may occasionally be gated for non-motorized use.
The best time to visit for scenic drives, hiking, or Boreas Pass cycling routes is typically from late spring through early fall. Summer offers vibrant wildflowers, while autumn showcases spectacular fall colors. In winter, the pass transforms into a haven for cross-country skiers and snowshoers, with the historic Section House at the summit available for overnight stays, offering a unique winter access experience.
Many find the "dirt section" of Boreas Pass particularly enjoyable, appreciating the well-preserved railroad grade that leads to the tree line. Along the way, you can explore the historic Baker's Tank and the "Boss's" hut at the top of the pass, which is the Section House. Interpretive signs provide fascinating insights into Colorado's railroad history, highlighting its past as the nation's highest narrow-gauge railroad.
Whether you're seeking Boreas Pass popular gravel trails for an adventurous ride, a scenic drive through stunning landscapes, or a historical exploration, this area offers a wealth of experiences. You can discover a variety of routes for gravel biking, hiking, and even cross-country skiing. To plan your visit and explore the diverse options, komoot offers numerous routes that highlight the best of Boreas Pass Gravel.
This Highlight is in a protected area
Please check local regulations for:
Pike National Forest
Tips
June 15, 2020
Cycling
November 17, 2023
Cycling

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Nearby routes
Best routes near Boreas Pass Gravel

39
riders
71.3km
06:04
1,230m
1,230m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

19
riders
66.1km
04:25
900m
900m
Hard bike ride. Very good fitness required. You may need to push your bike for some segments of this route.

9
riders
107km
07:54
1,450m
1,450m
Hard bike ride. Very good fitness required. You may need to push your bike for some segments of this route.
Details
Informations
Elevation 3,500 m
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Boreas Pass reaches an elevation of 11,481 feet (3,499 meters) at its summit. The gravel road follows an old railroad grade, which means it generally maintains a steady, manageable incline rather than steep, abrupt climbs. This makes it a popular choice for cyclists and hikers, as the grade is consistent, though the sustained ascent to over 11,000 feet still requires a good level of fitness.
While the main Boreas Pass Gravel road itself is popular for scenic drives and cycling, there are also opportunities for hiking. The road provides access to various trailheads and allows hikers to explore the historic sites at the summit, such as the Section House and Baker's Tank. For dedicated hiking trails, visitors can often find routes branching off the main pass, offering different levels of difficulty and scenic views.
The gravel terrain on Boreas Pass is generally well-maintained, but it can vary from packed dirt to looser, coarser gravel, especially after weather events. Cyclists should be prepared for some washboard sections and potential ruts. For gravel biking, it's recommended to use a gravel-specific bike or a mountain bike with wider tires (38mm or wider) for better traction and comfort. A good repair kit, plenty of water, and layers of clothing are also essential due to the high elevation and changeable mountain weather.
Parking is available at both ends of the pass, near Como and Breckenridge. On the Breckenridge side, there are designated parking areas before the road transitions to gravel. At the summit, limited parking is available near the historic Section House. During peak season, especially summer and fall, parking lots can fill up quickly. Arriving early in the morning is highly recommended to secure a spot.
Public transport options directly to Boreas Pass Gravel are very limited. The pass is located in a remote mountain area, making a private vehicle the most practical and common way to access it. Some visitors choose to cycle or hike up from nearby towns like Breckenridge, but there isn't a regular bus service that goes up the pass itself.
Generally, no specific permits are required for driving, cycling, or hiking on Boreas Pass Gravel. It is part of the National Forest system, which typically allows free public access for recreational activities. However, if you plan to stay overnight at the Section House during winter, reservations and fees are required. Always check with the local Forest Service office for any updated regulations or fire restrictions before your visit.
Boreas Pass Gravel is typically open to vehicle traffic from late spring (usually late May or early June) through late fall (often closing in late October or early November), depending on snow accumulation. During winter, the road closes to vehicles and transforms into a popular route for cross-country skiing and snowshoeing. Even in shoulder seasons, conditions can be unpredictable, with snow possible at higher elevations. Always check current road conditions before heading out.
The suitability for families depends on the children's age and experience. The steady, railroad-grade incline makes it a manageable ride for older children or those with some biking experience. For younger children, shorter sections or out-and-back rides from the summit might be more appropriate. The historical sites and panoramic views offer engaging stops for all ages. Always consider the high elevation and potential for rapidly changing weather when planning a family outing.
Yes, dogs are generally allowed on Boreas Pass Gravel. It's a popular area for dog owners to enjoy with their pets. However, it's crucial to keep dogs on a leash to protect wildlife and ensure the safety of other visitors. Pet owners should also be prepared to pack out all waste to maintain the natural beauty of the area. Remember to bring plenty of water for your dog, especially at high altitudes.
Boreas Pass Road traverses diverse habitats, offering opportunities to spot various wildlife. Common sightings include mule deer, elk, and various small mammals like marmots and pikas. Birdwatchers might spot raptors, jays, and other mountain birds. While less common, black bears and mountain lions inhabit the area, so it's always wise to be aware of your surroundings and practice safe wildlife viewing by keeping a respectful distance.
There are no restaurants or cafes directly at the Boreas Pass summit or along the gravel road itself. The summit features the historic Section House, which is a rental cabin, but it does not offer food services. Visitors should plan to bring all necessary food and drinks. The nearest towns with dining options are Breckenridge to the west and Como or Fairplay to the east.
The time it takes to bike the full length of Boreas Pass Gravel (approximately 22 miles one way) can vary significantly based on fitness levels, the direction of travel, and how often you stop for photos or breaks. For an average gravel cyclist, a one-way trip could take anywhere from 2 to 4 hours, not including the return journey. The climb from Como to the summit is a steady ascent, while the descent towards Breckenridge is generally faster.