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Routes
Bike touring routes & trails
United States
Colorado
Boulder County

Longmont Loop - South

Easy

4.6

(2982)

18,426

riders

Longmont Loop - South

01:24

23.7km

90m

Cycling

Cycle the easy 14.7-mile Longmont Loop - South, enjoying diverse scenery along the Saint Vrain Greenway with minimal elevation gain.

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

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1

5.31 km

Saint Vrain Greenway

Highlight • Cycleway

Well maintained multi use path along the Saint Vrain River. Though it leads through the middle of the city it very much feels like being out in the nature. You …

Tip by

2

9.01 km

Izaak Walton Park

Highlight • Rest Area

The dirt path around the pond is a very nice walk, a chance to enjoy a quiet, scenic view from around all site.

Tip by

B

23.7 km

End point

Parking

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Way Types & Surfaces

Way Types

18.2 km

4.77 km

631 m

< 100 m

< 100 m

Surfaces

17.7 km

5.06 km

972 m

< 100 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 (1,540 m)

Lowest point (1,490 m)

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Weather

Powered by Foreca

Today

Thursday 7 May

21°C

-1°C

7 %

Additional weather tips

Max wind speed: 12.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

What is the terrain like on the Longmont Loop - South?

The terrain is predominantly paved, offering a smooth ride ideal for touring bicycles. While mostly flat, some segments might include hard-packed gravel or unpaved sections. Elevation changes are minimal, making it an easy and accessible route.

Is the Longmont Loop - South suitable for beginners or families?

Yes, this route is considered easy and is highly suitable for all skill levels, including beginners and families. Its flat, mostly paved surface and minimal elevation make it a very enjoyable and accessible cycling experience.

What kind of scenery can I expect along the route?

You'll experience diverse scenery, particularly along the Saint Vrain Greenway, which follows the St. Vrain River. Expect views of green meadows, wetlands, and cottonwood forests. The route also connects to city parks and offers occasional glimpses of the Front Range mountains.

What wildlife might I see on the Longmont Loop - South?

The natural areas along the route, especially near the St. Vrain River, provide opportunities for birdwatching. You might spot herons, falcons, and eagles, as well as other wildlife like turtles, deer, and even coyotes.

What is the best time of year to cycle the Longmont Loop - South?

The route is enjoyable for much of the year. Spring and fall offer pleasant temperatures and vibrant scenery. Summer can be warm, so consider early morning or late afternoon rides. Winter cycling is possible, but check for snow or ice conditions.

Where can I park to access the Longmont Loop - South?

Parking is available at various points along the route, particularly at city parks that connect to the trail system, such as Izaak Walton Park. Look for designated parking areas near trailheads or park entrances.

Are there restrooms and water available along the route?

Yes, the Longmont Loop - South is part of a well-developed trail network. You'll find numerous amenities, including restrooms and water fountains, at various points, especially within the parks connected by the route.

Does the Longmont Loop - South connect to other trails?

Yes, the route is an integral part of Longmont's extensive multi-use pathway system. It prominently features sections of the Saint Vrain Greenway and connects to other local trails, forming a larger, interconnected network.

Is the Longmont Loop - South dog-friendly?

Yes, dogs are generally allowed on the multi-use pathways that make up the Longmont Loop - South. Please ensure your dog is kept on a leash and that you clean up after them to maintain a pleasant experience for all users.

Do I need a permit or pay an entrance fee to use the Longmont Loop - South?

No, there are no permits or entrance fees required to access and cycle the Longmont Loop - South. It is part of the public trail system in Longmont, freely accessible to everyone.

What notable features enhance the cycling experience on this route?

The route features underpasses at key intersections, such as Hover Street and SH 119, providing safer, off-street crossings for cyclists. This enhances connectivity and reduces interactions with motorized traffic, making for a more continuous and enjoyable ride.

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6

Altona to Jamestown Cycling Route

01:16h

14.9km

410m

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