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Routes
Bike touring routes & trails
United States
Colorado
Boulder County
Altona

Altona to Jamestown Cycling Route

Moderate

4.5

(6826)

19,946

riders

Altona to Jamestown Cycling Route

01:16

14.9km

410m

Cycling

Embark on a moderate touring cycling route from Altona to Jamestown, covering 9.2 miles (14.9 km) with a significant 1360 feet (415 metres) of elevation gain. You will spend about 1 hour and 16 minutes winding through the scenic Left Hand Canyon, following Left Hand Creek. The journey takes you…

Last updated: April 23, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Waypoints

A

Start point

Parking

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1

7.41 km

Lefthand Trailhead

Highlight • Trail

The Lefthand Trailhead is the main access point for a popular system of hiking and mountain biking trails on the eastern end of Lefthand Canyon. More of a large pullout …

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B

14.9 km

Jamestown Bottle Refill Station

Highlight • Rest Area

Jamestown is a great spot to stop and refill. They have a bottle refill station and a nice park to refuel in. You can keep climbing or turn around to make lots of other routes.

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Way Types & Surfaces

Way Types

14.3 km

440 m

< 100 m

< 100 m

Surfaces

14.3 km

350 m

234 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (2,120 m)

Lowest point (1,710 m)

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Weather

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Today

Tuesday 26 May

24°C

11°C

83 %

Additional weather tips

Max wind speed: 23.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

How long does it take to cycle the Altona to Jamestown Cycling Route?

The route is approximately 14.9 kilometers (9.2 miles) long and typically takes around 1 hour and 16 minutes to complete on a touring bicycle. This duration can vary based on your fitness level and how often you stop to enjoy the scenery.

What is the terrain like on this cycling route?

The route generally starts in the flatter areas of Boulder Valley along Left Hand Canyon Drive, which often has a wide, newly paved shoulder. As you progress, the terrain gradually climbs alongside Left Hand Creek, becoming notably steeper as it approaches Jamestown, especially on James Canyon Drive. While mostly paved, some extensions past Jamestown might be unpaved, requiring wider tires (28mm and above).

Is the Altona to Jamestown Cycling Route suitable for beginners?

The route is categorized as 'moderate' and requires good to very good fitness due to significant elevation gain. While initial sections might be manageable for beginners, the climb becomes considerably steeper closer to Jamestown. It's best suited for cyclists with some experience and a decent fitness level.

What can I see along the route?

You'll experience picturesque scenery winding through a canyon alongside a river, with lush green pine trees and views of tree-covered mountains. The route passes through sections of the Arapaho and Roosevelt National Forest. Key points include the Lefthand Trailhead and the historic mountain town of Jamestown, where you can find the Jamestown Bottle Refill Station and the popular Jamestown Mercantile.

What is the best time of year to cycle this route?

The best time to cycle is typically from late spring through early fall (May to October) when the weather is most favorable and roads are clear of snow and ice. Summer offers warm temperatures, while spring and fall provide cooler rides and beautiful foliage. Always check local weather conditions before you go.

Where can I park to access the route?

The route typically starts in the Boulder Valley area. A common access point is near the Lefthand Trailhead. Parking availability can vary, so it's advisable to check local regulations and designated parking areas before your visit.

Are there any permits or entrance fees required for this route?

The Altona to Jamestown Cycling Route passes through sections of the Arapaho and Roosevelt National Forest. While there are generally no specific permits or entrance fees required for cycling on the main roads within the forest, certain recreational activities or specific areas might have fees. Always check the official U.S. Forest Service website for the latest information regarding regulations and any potential fees for the areas you plan to visit.

Is the Altona to Jamestown Cycling Route dog-friendly?

While the route is primarily a cycling path, if you plan to bring a dog, they should be well-behaved and kept on a leash at all times, especially when passing through areas of the Arapaho and Roosevelt National Forest. Always ensure your dog is comfortable with cycling and can keep up safely. Please pack out all waste.

Does the route intersect other well-known paths?

Yes, the route intersects with several other paths. You may find yourself on sections of the Left Hand OHV Trails, Heil Valley Ranch, Left Hand Main Trail, Canyon Rim Trail, and Left Hand Access Trail at various points along the way.

Are there places to resupply with food and water along the way?

Yes, Jamestown is a cycling-friendly mountain town and a popular stopping point. You can find the Jamestown Bottle Refill Station and the Jamestown Mercantile, which is a traditional and popular spot for cyclists to grab snacks and refreshments.

What gear recommendations do you have for this ride?

Given the moderate to hard difficulty and significant elevation gain, a touring bicycle in good working order is essential. Consider bringing plenty of water, snacks, a repair kit, and appropriate layers of clothing for changing mountain weather. If you plan to extend your ride past Jamestown onto potentially unpaved sections, wider tires (28mm or above) are recommended.

Nearby routes

Moderate

6

Altona to Jamestown Cycling Route

01:16h

14.9km

410m

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