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Alderfer/Three Sisters/Dedisse Tour

 4.0 (127)
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Map Key

13.0 Miles 20.9 Kilometers



1,920' 585 m


-1,923' -586 m



Avg Grade (3°)


Max Grade (12°)

8,527' 2,599 m


7,112' 2,168 m


Shared By BlakeV Vanier


Minor Issues 26 days ago
Snowy: Rideable with good knobby tires. Hard pack snow over 90% of the trail with some slush patches. History

Getting forecast...

A tour of some pretty decent singletrack through the Dedisse and Three Sisters parks.

BlakeV Vanier

Dogs Leashed

Features eMTB allowed


This ride is generally pretty mellow but there are short sections that can increase the difficulty quite a bit. It's probably not a great ride for a beginner, but if they don't mind walking some sections, then it should be pretty manageable. There are also some sections that can be a bit rocky that might make newer riders uncomfortable.

The bit of the Sisters Trail between Bearberry and Dedisse Trail is actually very technical and fun if you like a challenge. It is on par with Hall Ranch, but not quite as long. There are also a lot of small sections of trail that have deviated from the original due to difficulty, so if you like more of a challenge you can try to stick to the hard stuff. (Though they are technical enough that you may not even think to try them).


The first part of the Dedisse Trail is a nest of trails so it might be easy to get lost. There is one steep section that goes into a small creek where the trail forks after coming out, make sure to turn left here. Once you cross the road, there will be only one main trail.

The Dedisse has some decently steep and loose little climbs. All should be pretty rideable if you have the gas and balance to push through.

Once you get to the Evergreen Mountain trail you have a pretty steady 600ish foot climb over about 2 miles.

At the top, you can choose to do the Summit Loop if you'd like to reach the top and enjoy the view. There is only one tricky spot on this loop. If you take the loop counter-clockwise, the up portions are a little more technical. There is a scenic off shoot about 100 feet before the actual loop which can mess you up if you hope to go CCW. It's a short off shoot so not a big deal if you accidentally take it.

The back side of the Evergreen Mountain trail has a few rocks but nothing of note. Follow it to the west and north on your way to the Sisters Trail. On your way, you;ll incounter a few junctions. At the first one, with Wild Iris Loop, stay to the left. Shortly thereafter, take a left to cross Buffalo Creek Rd and another left to join Bluebird Meadow Trail. At the next two
junctions, stay left again to join Bearberry and follow it all of the way to Sisters Trail.

Once you loop back to the Sisters Trail, you'll hit some pretty great technical riding. The first part has a couple tough rock garden/water bar features that you'll have to climb over. The decent off the back side is pretty steep with a couple technical rocks and a lot of tight switch backs.

Once you get to the bottom of the steep section, turn left to join the Dedisse Trail once again and follow it back to where you began.


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Your Check-Ins


Dec 17, 2018
chris coufal
Temps in the 40s perfect. Trails are dry with minor snow and ice in shaded areas. Snow areas not slippery from all the dirt in these areas
Oct 29, 2018
Bryant P
Oct 13, 2018
Chris Stellato
Really technical ride, spent a good bit if time walking! Happy for the challenge but I did not find a lot of “flow” on this trail 13mi
Sep 26, 2018
DLS 88
dry out there but awesome nonetheless. 13mi — 2h 00m
Sep 26, 2018
Mike Hillegas
Sep 23, 2018
Peter Byrne
Sep 22, 2018
Sheri Vernier
1st ride
Sep 15, 2018
Hunter Ruth

Trail Ratings

  4.0 from 127 votes


in Evergreen


  4.0 from 127 votes
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in Evergreen


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117 Views Last Month
35,919 Since Aug 25, 2014
Intermediate Intermediate

My college roommate's dad used to say, "A little sh*t can spoil a lot of ice cream." (think about it: how much do you want in your cone?) This "featured ride" could be a lot better if: 1. Rate this tour as Blue/Black if you're going to include the more technical sections. Those who make a quick afternoon ride choice, without reading all the "fine print", may not appreciate the chortling laugh surely had by the double-diamond riders who rated this a simple "Blue". I've found mtbproject ratings generally very accurate in the past. Rating this tour as full "Blue" simply isn't consistent with other mtbproject ratings. I won't be so trusting next time. 2. Map out the segments by name, matching what signs are posted. Trying to follow the mtbproject map, as well as the exported gpx on AllTrails, Google, and Trailforks - I had to stop at every intersection, trying to discern which way. And I *still* made several wrong turns, having to double back. A few more signs posted at intersections sure wouldn't hurt! This tour has some really fun segments within it. I'll definitely ride those excellent pieces again. But is this segment compilation, this specific tour, worthy of the "Featured Ride" moniker? I don't think so. Aug 19, 2018
Damien Gonsman
Damien Gonsman   Evergreen
Recent trail maintenance has removed some of the more challenging and fun technical sections (rocks and steps). The evergreen mtn loop is the worst of it. Plus, the knuckleheads doing the work channeled the water right down the center of the trail in some places...woops. water goes across the trail to reduce erosion guys. On the dedisse side, the last section that used to come down the ridge is totally different. The new trail goes closer to the golf course. The sisters trail and the brothers lookout seemed like they haven't been messed with...Yet! I hope they are not doing any of this "maintenance" at the request of bikers or hikers...shame on those people if they are...go ride something easier. btw, terina c, sisters trail (which is part of this loop) is black and one of the more technical trails in evergreen. Come back up and I'll show you around. Sep 7, 2018
DLS 88
DLS 88   Boulder
loved this trail, the climb on dedisse near the golf course is super steep and a tough way to start this ride. would consider that portion way harder than most "blues" in the area. I may just park at evergreen mtn trail west parking and explore trails from there next time, ponderosa was fun from the small portion I rode. Ihad to HAB up part of sisters, and the switchbacks coming down are super tight. adding the summit loop is recommended, do the loop up top CW for a short fun tech descent. Overall I loved this place and want to explore more loop options up top. Sep 27, 2018

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