Adler-Fingru Open Space – Sterns Lake loop from Coalton Trailhead

Adler-Fingru Open Space – Sterns Lake loop from Coalton Trailhead

Moderate

3.4

(26)

riders

Adler-Fingru Open Space – Sterns Lake loop from Coalton Trailhead

02:24

43.2km

290m

Gravel riding

Moderate gravel ride. 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: August 12, 2026

Waypoints

Start point

Parking

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10.9 km

Davidson Mesa

Nature Reserve

13.0 km

Harper Lake

Highlight • Lake

Leon Wurl Wildlife Sanctuary, also known only as Harper Lake, has a paved path around a lake that is around .9 miles long. There is no elevation gain on this …

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24.0 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, …

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26.4 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 …

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35.0 km

Sterns Lake

Highlight • Lake

Sterns Lake is a small lake in the Carolyn Holmberg Preserve at Rock Creek Farm which is well-known for the birding opportunities (especially the Bald Eagles in the winter) and …

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35.5 km

Carolyn Holmberg Preserve at Rock Creek Farm

Highlight • Trail

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 …

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35.6 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 …

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36.6 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 …

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36.8 km

Cradleboard Trail is a short trail in Carolyn Holmberg Preserve in western Broomfield. It leads from the parking lot at South Brainard Drive to Stearns Lake and is a nice trail to view wildlife like prairie dogs and eagles.

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