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Routes
Mountain biking trails
United States
Colorado
Broomfield

Adler-Fingru Open Space – Warembourg Open Space loop from Broomfield High School

Routes
Mountain biking trails
United States
Colorado
Broomfield

Adler-Fingru Open Space – Warembourg Open Space loop from Broomfield High School

Easy

4.6

(6520)

7,865

riders

Adler-Fingru Open Space – Warembourg Open Space loop from Broomfield High School

01:23

23.2km

140m

Mountain biking

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: April 19, 2026

Waypoints

A

Start point

Parking

Get Directions

1

2.52 km

Carolyn Holmberg Preserve at Rock Creek Farm

Highlight • Natural

This area provides a tranquil atmosphere in the midst of the city, featuring several bodies of water and creeks. With stunning views of the Front Range, it's a place to …

Tip by

2

8.07 km

Adler-Fingru Open Space

Highlight • Natural

Adler-Fingru Open Space is a 55.7-acre area that was once used for crop production and livestock grazing. Ownership of the space is divided three ways among the cities of Boulder, …

Tip by

3

10.5 km

Warembourg Open Space

Highlight • Trail

Warembourg Open Space, shaped through acquisitions in 1999 and 2003 by Boulder County, Louisville, and Lafayette, is a haven for nature enthusiasts. Nestled along Coal Creek and the Coal Creek …

Tip by

4

12.2 km

Rock Creek Trail

Highlight (Segment) • Trail

Rock Creek Trail stretches 12 miles from Majestic Drive in Lafayette to Coalton Road and McCaslin Boulevard in Superior. The surface consists of crushed gravel, and the entire length is car-free.

Tip by

5

18.9 km

6

19.5 km

This area provides a tranquil atmosphere in the midst of the city, featuring several bodies of water and creeks. With stunning views of the Front Range, it's a place to …

Tip by

7

19.6 km

Stearns Lake

Highlight • Lake

As the biggest lake in Carolyn Holmberg Preserve, Stearns Lake is also the most popular one and can be reached via multiple parking lots and trails. The lake itself offers a tranquil environment with great views towards the mountains.

Tip by

8

19.7 km

Bald Eagle Nest Viewing Area

Highlight • Viewpoint

After losing their nest to a lightning strike in August, it was unclear which location the eagles would choose for their to new nest. With limited suitable nesting trees in …

Tip by

B

23.2 km

End point

Parking

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Way Types & Surfaces

Way Types

12.0 km

6.09 km

2.10 km

1.67 km

1.32 km

< 100 m

Surfaces

17.5 km

2.66 km

1.80 km

948 m

295 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 (1,660 m)

Lowest point (1,560 m)

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Weather

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Today

Wednesday 1 July

31°C

12°C

16 %

Additional weather tips

Max wind speed: 22.0 km/h

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Description

If you're looking for a relaxed ride that still offers great views, the Adler-Fingru Open Space – Warembourg Open Space loop from Broomfield High School is an easy mountain bike ride worth checking out. This 14.4-mile (23.2 km) route, with a gentle 444 feet (135 metres) of elevation gain, can be completed in about 1 hour and 22 minutes, making it perfect for beginners or anyone wanting a casual outing on mountain biking trails near Broomfield High School.

What to expect on Adler-Fingru Open Space – Warembourg Open Space loop from Broomfield High School

As you pedal along this route, expect diverse landscapes. You'll enjoy expansive open spaces with views of the majestic Rocky Mountains and the iconic Flatirons. The trail takes you through the Warembourg Open Space, where you'll find a lovely riparian habitat along Coal Creek, complete with cottonwoods and opportunities for wildlife spotting. Adler-Fingru Open Space also contributes to this valuable creekside environment. The terrain is mostly flat and even, with no significant obstacles, making it an ideal choice for all skill levels and a great introduction to mountain biking near Broomfield.

Planning your visit

The loop conveniently starts from Broomfield High School, which serves as an accessible mountain biking access point. Parking is generally available at the school. This easy mountain bike ride is suitable for any fitness level and doesn't require advanced skills, so you can enjoy it without extensive preparation. Just bring your bike and enjoy the open spaces.

Trail details

  • Distance: 14.4 miles (23.2 km)
  • Elevation gain: 444 feet (135 metres)
  • Difficulty: easy
  • Estimated time: 1 hours and 22 minutes

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