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A double-lollipop through prairie and lodgepole forest. Mostly run-able with tough climbs and flowing descents.

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6,547' 1,995 m


5,662' 1,726 m


1,065' 325 m


1,065' 324 m



Avg Grade (3°)


Max Grade (11°)

Dogs No Dogs

Features Birding · Geological Significance · Views · Wildflowers


The Spring Brook and Goshawk loops are the best of the trail system south of Boulder: decent-but-run-able climbs, flowing descents, enough technicality to keep you focused, and enough scenery to heal your spirit. There is often wildlife and always wildflowers to see.

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.

Need to Know

This is a fee use area. People from outside Boulder County should use the self-service fee stations at the trailhead. This is, in season, active rangeland and you may encounter cattle. Leave gates either open or closed as you find them. Watch for mountain bikes which are active on some portions of this route.


The route starts from the Dowdy Draw trailhead with 0.5 miles of wide gravel up to the restroom area. Continue south for a mile of ascending singletrack (watch for descending mountain bikes!) to the obvious trail junction. Turn right (west) from the Doudy Draw trail for a 0.3 mile connection to the bottom end of the Springbrook loop.

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.


Shared By:

Charles Danforth with improvements by Nick Barendregt

Trail Ratings

  4.5 from 11 votes


in Doudy Draw


  4.5 from 11 votes
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in Doudy Draw


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47 Views Last Month
4,074 Since Jul 12, 2019



Trail runners enjoy the views of the valley below and abundant wildflowers in the Spring and Summer
Jul 8, 2015 near Coal Creek, CO
Stay cool in the shade of the pines. Switchback trails lead to the top of the ridge revealing stunning views of the valley below.
Jul 8, 2015 near Coal Creek, CO
The flatirons and entrance to Eldorado Canyon
Jun 12, 2018 near Coal Creek, CO
June greenery on Goshawk Ridge
Jun 12, 2018 near Coal Creek, CO
Spring Brook Loop.
Jan 31, 2016 near Boulder, CO
This section of the Spring Brook Loop affords gorgeous views of the flatirons and Eldorado Canyon State Park.
Aug 14, 2019 near Boulder, CO


Current Trail Conditions

All Clear 1 day ago
Add Your Check-In


Jul 1, 2023
Carl Reinhardt
5mi — 1h 05m
Dec 10, 2022
Angela Delos Santos
Nov 20, 2022
Atsuko Ohtake
Jun 15, 2022
Matt Richardson
Got mixed up and ended up going down almost to Fowler and then ran back up. 8.6mi — 1h 33m
Nov 20, 2021
Atsuko Ohtake
Jun 6, 2021
Rusty Buick
Wildflowers look beautiful
May 28, 2021
Tough uphill to begin, great coming down. 8.3mi — 1h 33m
Dec 15, 2020
Owen Darr
Nice snow pack, beautiful day. No ice. Just enough tracks to not lose the trail. 8.3mi