Middle St. Vrain

4.5/5 (58 reviews)
Lyons, Colorado (Boulder County)
Last Updated: 11/23/2022

Trail Information


This trail near Boulder, CO is popular to combine with the Coney Creek (aka Coney Flats) Trail, this part of that loop is considerably easier with the exception of The Gatekeeper. Middle St. Vrain is located near the Indian Peaks Wilderness which offers some great views and great forest scenery. The drive itself is a nice combination of off-road bumpiness and a trip through the northern Colorado wilderness. There are a number of official walking trails and fishing opportunities available and many people camp nearby just for the chance to walk these trails. Water runs as a year-round stream through many sections of the trail and you'll drive over Timberline Falls. Middle Saint Vrain may not have the water crossing of its neighbors, but it is a great trail onto itself and a Colorado favorite.

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.

From the Community

Start a free trial and get this level of detail on every trail guide
Start Free Trial