Spring Brook / Goshawk Double Loop
ElevationAscent: 1,065' 325 m
Descent: -1,065' -324 m
High: 6,547' 1,995 m
Low: 5,662' 1,726 m
GradeAvg Grade: 5% (3°)
Max Grade: 19% (11°)
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“A double-lollipop through prairie and lodgepole forest. Mostly run-able with tough climbs and flowing descents.”— Charles Danforth
The Dowdy Doudy Draw and Springbrook sections are open to mountain bikes, but the Goshawk Ridge part is not. Connections to Flatirons Vista North and Fowler Trail as well as the South Mesa Trail connections across the street allow you to create any number of cool routes through the south Boulder foothills and plains.
Option time! Going left on the Spring Brook Loop South is a gradual climb up 1.4 miles of forested singletrack. Turning right on Spring Brook Loop North is a mile of gradual climb through view-ridden prairie and forest. At the top end of the loop, climb a short hill up to the dirt Denver Waterboard Road.
Option time #2! Runing north (right) along the road is an easy descent along the east edge of the hogback. Look for fossilized ripple marks on the wall to your left. Proceed through an old railway cut with views of Eldorado Canyon and keep going up the road as it makes a big switchback to the west. At a signed junction, switch to singletrack for a climb through forests and then a large meadow to the top of the loop. The descent from the top of Goshawk Ridge is a wonderfully flowing bit of singletrack forest ending at a bridge across the canal and back to Denver Waterboard Road. Cross the road back to Springbrook and run whichever half of the loop you didn't ascend.
If you run the Goshawk Ridge clockwise instead, cross the bridge first and puff your way up 0.9 miles of wooded ascent through a short swale and some nice switchbacks. Bomb down the grassy meadow trying not to be distracted by the views of Eldorado Canyon and make your way back to the loop junction on the Denver Waterboard Road.
Once you've finished both Springbrook and Goshawk loops, run the connector back to the Dowdy Draw trail and a final 1.5 miles back to the trailhead. Eight miles and about 1,100 feet of climbing.
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We need help with the following missing trail information:
Flora & Fauna, Runner Notes, History & Background
Local Club: Boulder Trail Runners
Land Manager: City of Boulder Open Space and Mountain Parks
Jan 9, 2020: Boulder Area Trails App
Sep 27, 2019: Expedited Review of Prairie Dogs in Irrigated Lands
May 8, 2019: Wonderland Lake Integrated Site Project (ISP)