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Routes
Bike touring routes & trails
United States
Colorado
Park County

Boreas Pass

Hard

4.5

(5312)

14,476

riders

Boreas Pass

03:23

33.5km

550m

Cycling

Challenge yourself on the Boreas Pass, a difficult touring cycling route that covers 20.8 miles (33.5 km). You will gain 1810 feet (552 metres) in elevation over an estimated 3 hours and 23 minutes, making this a demanding ride. As you pedal, you will experience panoramic views across the White…

Last updated: April 23, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Pike National Forest

Waypoints

A

Start point

Parking

Get Directions

1

100 m

Como

Highlight • Settlement

Historic mining town that used to be at the strategic roundhouse for the train crossing the Continental Divide. Since the railway closed 1937, the town mostly died as well.

Tip by

2

6.02 km

Peabody Switchback Overlook

Highlight • Viewpoint

To climb up the Boreas Pass railways had to maintain a grade of less than 3% (I think), necessitating some loops and switchbacks.

Tip by

3

6.43 km

Southern Boreas Pass Road - Railroad grade

Highlight (Segment) • Mountain Pass

Thanks to the former railroads need for gradual ascents the climb to the 3500 m pass is long but easy to pedal on the excellent gravel road.

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4

16.8 km

Boreas Pass Gravel

Highlight • Mountain Pass

The dirt section of Boreas Pass is my favorite. On 6/14/20 the road was gated, so foot and bike "traffic" only. Really nice railroad grade climb to tree line, past …

Tip by

B

33.5 km

End point

Parking

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Way Types & Surfaces

Way Types

33.2 km

278 m

Surfaces

32.7 km

818 m

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Elevation

Elevation

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Weather

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Today

Friday 8 May

11°C

-2°C

7 %

Additional weather tips

Max wind speed: 15.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

Where can I park to access the Boreas Pass cycling route?

Parking is available at both ends of the route. On the Breckenridge side, you can typically find parking near the start of the pass road. On the Como side, parking is available in the small town of Como itself. Specific trailhead parking information can vary, so it's always good to check local resources before you go.

Is the Boreas Pass trail dog-friendly?

Yes, the Boreas Pass route is generally dog-friendly. Since much of it passes through the White River and Pike National Forests, dogs are typically allowed but should be kept on a leash to protect wildlife and ensure a pleasant experience for all users. Always practice Leave No Trace principles and clean up after your pet.

When is the best time of year to cycle Boreas Pass?

The best time to cycle this route is from summer through early fall. During these months, the snow has usually melted, and the weather is more favorable. Always check current conditions, especially in spring and late fall, as the high elevation means snow can linger or arrive early, leading to road closures.

Do I need a permit or pay an entrance fee to cycle Boreas Pass?

No, there are no specific permits or entrance fees required to cycle the Boreas Pass route itself. It passes through the Pike-San Isabel National Forests, which generally do not require permits for day-use activities like cycling. However, always be aware of any specific regulations or closures that might be in effect.

Is there a recommended direction to cycle Boreas Pass for a better experience?

Many cyclists prefer starting from the Breckenridge side and cycling towards Como. The initial miles from Breckenridge are often well-packed, and while the climb is consistent, the grade is gradual. The descent towards Como can be rougher with embedded rocks and washboard sections, so tackling this downhill might be more comfortable than climbing it.

What is the terrain like on the Boreas Pass cycling route?

The route is primarily a 100% gravel road. While some sections, especially from the Breckenridge side, can be well-packed dirt suitable for various bikes, the surface becomes progressively rougher as you ascend. Expect embedded rocks, potholes, and washboard sections, particularly on the descent towards Como. It's a dirt road, not a singletrack trail.

What scenic views and historical landmarks can I expect along the route?

You'll be treated to breathtaking panoramic views of Quandary Peak and other Central Rockies peaks. Highlights include large aspen groves, the picturesque Goose Pasture Tarn, and views of Mount Silverheels. Historically, you'll find remnants of the narrow-gauge railroad era, such as the renovated Section House, an old railroad boxcar, and Banker's Tank. Don't miss the Peabody Switchback Overlook for expansive vistas.

How difficult is the Boreas Pass cycling route?

The route is rated as difficult, primarily due to the significant altitude. It starts above 10,000 feet and ascends to nearly 11,500 feet at the summit, which can be challenging for those not acclimated to high elevations. While the grade is gradual, the rough gravel terrain, especially on descents, adds to the challenge. It's considered a good beginner touring road for the climb, but the overall experience requires stamina and bike handling skills for the rougher sections.

Does the Boreas Pass route connect with other trails?

Yes, the route intersects with other paths. Notably, it covers a significant portion of the Great Divide Mountain Bike Route (49% of the route). You'll also find sections that align with the Gold Dust Trail (8%), Selkirk Road (5%), and Old US 285 (2%).

Are there any amenities or services available near the trailheads?

The town of Breckenridge, on one side of the pass, offers a wide range of amenities including cafes, restaurants, bike shops, and accommodation. On the other side, the small town of Como has more limited services, but you might find basic provisions or a place to stop. Fairplay is another nearby town with some amenities.

Is the Boreas Pass route suitable for families or beginners?

While the gradual grade makes the climb less steep than some mountain passes, the significant altitude and rough gravel terrain can be challenging. For families or beginners, it's crucial to be acclimated to high elevations and comfortable with riding on varied gravel surfaces. Shorter, out-and-back sections from either end might be more suitable for those new to high-alpine gravel cycling.

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