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Adler-Fingru Open Space – Aquarius Open Space loop from Rocky Flats National Wildlife Refuge trailhead

Adler-Fingru Open Space – Aquarius Open Space loop from Rocky Flats National Wildlife Refuge trailhead

Hard

4.8

(9574)

17,479

riders

Adler-Fingru Open Space – Aquarius Open Space loop from Rocky Flats National Wildlife Refuge trailhead

03:31

55.1km

530m

Gravel riding

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: June 8, 2026

Tips

Includes a segment in which cycling is not permitted

After 12.1 km for 121 m

Waypoints

Start point

Parking

Get Directions

233 m

Broomfield County High Point

Highlight • Summit

This spot is great for a quick break and offers sweeping views of the mountains, with the Great Western Reservoir visible in the distance as well.

Tip by

10.4 km

Lac Amora Open Space

Nature Reserve

21.9 km

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 Regional Trail, this space offers a riparian habitat, creating an immersive biking experience through a landscape shaped by collaborative conservation efforts.

Tip by

24.3 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, Louisville, and Lafayette. This property is under an agricultural lease, so access to the public is limited to only the Coal Creek Trail that passes through the space.

Tip by

25.8 km

Aquarius Open Space

Highlight • Trail

Aquarius Open Space is crossed by many trails, being the main one "Coal Creek Trail". There's a parking lot on the southeastern part, although you can access the area by any of the trails that go through it.

Tip by

37.9 km

Community Ditch Trail

Highlight (Segment) • Trail

The Community Ditch Trail is an easy mountain biking route that serves as a connector to the Marshall Mesa trails. While not particularly thrilling to ride, it offers beautiful views of the Flatirons and golden open fields. The trail effectively connects the east and west sections of trails across Highway 93, making it useful, scenic, and straightforward.

Tip by

49.5 km

Meadowlark Trail

Highlight (Segment) • Trail

The Meadowlark Trail forms the eastern leg of the famous Dirty Bismark loop. The views over the adjoining open spaces are a delight and the easy grade is inviting to riders of all levels.

Tip by

50.7 km

View to Davidson Mesa Open Space

Highlight • Viewpoint

The views from here are amazing. It shows just how wide and open Davidson Mesa Open Space is. It's a great place to stop for a pause.

Tip by

52.6 km

The Wall - McCaslin Boulevard Climb

Highlight (Segment) • Climb

"The Wall" from the Morgul Bismark road race. Also featured in the 1985 motion picture American Flyers as the first day of the three day bike race "Hell of the West".

Tip by

55.1 km

End point

Parking

Way Types & Surfaces

Way Types

27.4 km

10.7 km

10.3 km

3.28 km

1.76 km

1.65 km

< 100 m

Surfaces

20.9 km

16.7 km

9.35 km

7.98 km

197 m

< 100 m

Elevation

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

Highest point (1,780 m)

Lowest point (1,570 m)

Weather

Tuesday 7 July

32°C

16°C

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Comments

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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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Adler-Fingru Open Space – Aquarius Open Space loop from Rocky Flats National Wildlife Refuge trailhead

Broomfield County High Point

Warembourg Open Space

Adler-Fingru Open Space

Aquarius Open Space

Community Ditch Trail

Meadowlark Trail

View to Davidson Mesa Open Space

The Wall - McCaslin Boulevard Climb

Nearby routes

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