Middle St. Vrain

4.5/5 (58 reviews)
Lyons, Colorado (Boulder County)
Last Updated: 05/06/2023

Trail Information


Middle St. Vrain is a well-known off-road trail near Boulder, CO, often combined with Coney Creek. While the loop of the two offers varying difficulty levels throughout, Middle St. Vrain is relatively uncomplicated, except for The Gatekeeper. Since the Indian Peaks Wilderness surrounds the road, there are breathtaking views of the forest scenery as you travel. The trail is also an artery to recreation, with several official walking trails and fishing opportunities. Its unique charm and stunning scenery draw in adventurers from all over, so don't let the lack of a water crossing as big as its neighbor deter you. There's still plenty of fun on this trail. 

Trail Difficulty and Assessment

Trail Navigation

Trail Reviews

4.5/5 (58)
Official Crew
Seasonal Closure
Visited: 11/23/2022

Closed for the season, see you next season!!
Rated 5/5
Visited: 10/29/2022
Difficulty Accuracy: Easier

This trail was still open today. The weather was perfect. Ran this trail in conjunction with Coney flats. There was about 4 to 6 inches of snow on the majority of the trail which make it a bit more difficult especially in the boulder fields, but this also added to the challenge and the thrill. I think the trail is more of a high moderate (4) then a Difficult (5) except for the snow.
Official Crew
Visited: 10/23/2022

Trail is staying open a little later this season. Enjoy while you can!
Official Crew
Seasonal Closure
Visited: 10/17/2022

Seasonal Closure is in effect, the trail opens again next season!
Rated 4/5
Visited: 08/27/2022
Difficulty Accuracy: Harder

Today was my first time on Middle St Vrain / Coney Flats. 2017 TRD Off-Road, 2” Lift, on 32’s. Wonderful water crossings. A rocky/bumpy road. Not a lot of views. Ran it starting at Camp ****. I got stuck once ( high centered on my sliders ) on the rock garden cresting the hill after the turn off to Coney Flats. The trail is getting chewed up and you have to go over one of the boulders because of their spacing. No bypass. Video below. With the help from some experienced spotting, able to get unstuck and pick a route between the boulders to make it to that beautiful lunch spot under Sawtooth Mountain. The RCI armor and sliders are getting lots of work on this trail.

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