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Blue Sky to Indian Summer



11.0 mile 17.7 kilometer loop
95% Singletrack


Ascent: 957' 292 m
Descent: -957' -292 m
High: 5,796' 1,767 m
Low: 5,442' 1,659 m


Avg Grade: 3% (2°)
Max Grade: 17% (10°)


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A short and casual ride, perfect for those after-work excursions.

Ian Stewart

Electric Mountain Bikes Unknown

Features -none-


Blue Sky is a very casual ride with great flow over lightly rolling terrain. It's essentially all singletrack with only one section of steps that most people will walk, though advanced riders can usually figure out a line. The Indian Summer loop adds a couple miles and a few hundred feet of climbing, and together they make for a perfect after-work ride that keeps you coming back again and again.

Note that Blue Sky does have quite a number of blind turns and the trail can be quite popular on weekends, so be careful.

Need to Know

Parking is run by Larimer County Parks, and is $9/day or yearly passes are available (find info here). There is an outhouse and water fountain. The parking lot closes at dusk.


From the parking lot, you'll find the trailhead near the outhouse which you'll take to the right. Continue straight on the obvious trail and you'll go through an underpass around half a mile in.

At about 3.5 miles you'll hit the intersection with the Rim Rock trail. Continue straight (right) on Blue Sky to descend towards Indian Summer. Watch your speed, as the bottom of this descent turns somewhat sharply to the right on usually very loose sand.

When the singletrack becomes road, follow this to the left for about half a mile before the trail continues on the right. Shortly after you'll hit the Indian Summer intersection which you follow up to the right. This will climb up a few hundred feet on low-grade switchbacks before you get to descend back down on intermediate terrain.

At the bottom, you'll pop out where you initially turned left onto the road. Blue Sky continues straight ahead. Take this back to the trailhead.


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May 31, 2020
Noli E
May 29, 2020
Issei Nakahara
2h 30m
May 25, 2020
Josh Morrell
Sick trail!
May 9, 2020
Benjamin Armengolli
Great long trail! Parking lot is usually busy so carpool is a good option. 10.5mi — 2h 01m
Apr 10, 2020
Andrew Kuiken
home to Quickie Stop and back. 25 miles in 3 hours. 25mi — 3h 05m
Mar 31, 2020
Jarrod Cawley
Mar 29, 2020
Andrew Kuiken
North to south to home. 1:07 to DB TH. 12mi
Feb 2, 2020
Andrew Kuiken
rode from home to Hidden Valley to JJ's to Vintage City... beautiful day! 26.5mi

Trail Ratings

  4.2 from 90 votes


  4.2 from 90 votes
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in Colorado


626 Views Last Month
21,491 Since Apr 4, 2013



The view facing east.
Jul 20, 2013 near Loveland, CO
Be alert for rattlesnakes on this trail.  This one was kind of aggressive.
Aug 13, 2014 near Loveland, CO
Lots to be said for a morning ride out to Indian Summer.
Jul 23, 2016 near Loveland, CO
Rainy day on the Blue Sky Trail.
Oct 8, 2015 near Loveland, CO
Looking south towards Indian Summer Loop.
Aug 28, 2016 near Loveland, CO
View South At Rim Rock Intersection
May 23, 2013 near Loveland, CO

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