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Routes
Road cycling routes
United States
Colorado
Boulder County
Longmont

Longmont Loop and Saint Vrain Greenway

Easy

4.8

(1805)

15,086

riders

Longmont Loop and Saint Vrain Greenway

01:46

36.1km

110m

Road cycling

This easy 22.4-mile road cycling route combines the Longmont Loop and Saint Vrain Greenway, offering diverse scenery and wildlife.

Last updated: February 26, 2026

Tips

The surface for a segment of your route may not be suitable

Some segments of your route comprise a surface that may not be suitable for your chosen sport.

After 30.6 km for 874 m

Waypoints

A

Start point

Parking

Get Directions

1

1.11 km

Rough and Ready Ditch Trail (Skyline Sports Park to Rough and Ready Park)

Highlight (Segment) • Trail

The Rough and Ready Ditch Trail, or Greenway, runs along one of Longmont's oldest irrigation ditches. This short multi-use trail is open to all non-motorized traffic and is popular with walkers, runners, and cyclists.

Tip by

2

8.97 km

McIntosh Lake

Highlight • Lake

McIntosh Lake is a beautiful reservoir in Longmont that offers 3.5 miles of easy walking trails and fantastic views of Longs Peak and Mt. Meeker. It's popular with walkers, runners, …

Tip by

3

21.4 km

The St. Vrain River Greenway is the "crown jewel" of Longmont's trail system as it links many parks, schools, other trails, and commercial areas via an attractive, well-maintained concrete path. …

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B

36.1 km

End point

Parking

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Way Types & Surfaces

Way Types

30.8 km

3.44 km

1.15 km

571 m

128 m

< 100 m

Surfaces

25.3 km

9.64 km

1.19 km

< 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 (1,560 m)

Lowest point (1,490 m)

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Weather

Powered by Foreca

Today

Monday 18 May

8°C

3°C

97 %

Additional weather tips

Max wind speed: 16.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

Is the Longmont Loop and Saint Vrain Greenway suitable for beginners?

Yes, this route is rated as easy with minimal elevation changes, making it ideal for beginners and cyclists of all fitness levels. It's primarily paved and suitable for road bikes.

What is the terrain like on this route?

The route is predominantly paved with smooth surfaces, perfect for road cycling. While mostly paved, some sections may include a narrow patch of fine gravel. Lower sections of the St. Vrain Greenway may have standing water after heavy rains, so be mindful of conditions.

What kind of scenery can I expect along the way?

You'll experience diverse scenery, including picturesque green meadows and trees along the St. Vrain River. There are also spectacular mountain views and tranquil lake vistas, especially near McIntosh Lake. The route transitions between urban areas and more rural countryside, with a mix of shaded and open sections.

What wildlife might I see while cycling?

The St. Vrain Greenway is known for its abundant wildlife. Keep an eye out for bald eagles, wood ducks, great blue herons, and Canada geese, especially near the river and lake areas.

Are there any notable points of interest or landmarks?

Yes, the route incorporates sections of the Rough and Ready Ditch Trail and the scenic St. Vrain Greenway. You'll also pass by McIntosh Lake, which offers tranquil views. The St. Vrain Greenway itself is considered the "crown jewel" of Longmont's trail system, connecting various parks and offering amenities like picnic areas.

Does this route connect to other trails?

Yes, the St. Vrain Greenway, a significant part of this route, offers extensive connectivity. It links to other regional trails such as the Left Hand Greenway and the Longmont-to-Boulder Regional Trail, providing options for longer rides. The route itself utilizes sections of the Longmont Loop - South, Saint Vrain Greenway, and Oligarchy Ditch Trail.

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

The route is enjoyable for much of the year. Spring and fall offer pleasant temperatures and vibrant scenery. While possible in winter, be aware that lower sections of the St. Vrain Greenway may have standing water after heavy rains, and conditions can vary.

Is the Longmont Loop and Saint Vrain Greenway dog-friendly?

The St. Vrain Greenway, which forms a large part of this route, is a multi-use path. Dogs are generally allowed but must be kept on a leash and owners are responsible for cleaning up after them.

Do I need a permit or pay an entrance fee to use this trail?

No, there are no permits or entrance fees required to access and cycle the Longmont Loop and Saint Vrain Greenway.

Where can I park to access the route?

There are various access points along the St. Vrain Greenway and Longmont Loop with parking available at connected parks such as Golden Ponds, Sandstone Ranch Park, and Rogers Grove Park. You can also find parking near the Rough and Ready Ditch Trail.

Are there restrooms or other amenities available?

Yes, the St. Vrain Greenway features accessible bathrooms at various points along the trail. You'll also find picnic areas and playgrounds in the parks it connects, such as Golden Ponds and Sandstone Ranch Park. Restaurants and even the Left Hand Brewery are conveniently located near sections of the trail.

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