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Alderfer/Three Sisters Loop



6.6 mile 10.6 kilometer loop
90% Runnable


Ascent: 1,086' 331 m
Descent: -1,079' -329 m
High: 8,161' 2,487 m
Low: 7,486' 2,282 m


Avg Grade: 6% (4°)
Max Grade: 28% (16°)


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Trail shared by Chelsea Gribbin

A beautiful six-mile loop through the forest with a great high point for views.

Chelsea Gribbin

Features Views · Wildlife


This route follows Evergreen Mountain Trail up to a wonderful lookout, then descends back to the parking lot, and climbs up Sister's Trail to Ponderosa Trail and then descends back to the parking lot again.

Need to Know

There are some sections with a lot of roots and rocks, so watch your ankles.

Runner Notes

Rocks and roots are particularly dangerous for ankles on this trail. The trails are also a popular mountain biking area, so pay attention and yield when necessary.


From the trailhead, cross the road to Evergreen Mountain Trail. Follow this trail, climbing up Evergreen Mountain. After about a mile and a half, you'll reach a beautiful lookout to the southeast. From here, continue on the trail and you'll pass the summit trail, which leads to the summit of Evergreen Mountain and is only about a mile roundtrip.

The trail descends here and ends at a road. To get back to the parking lot, cross the road and continue on Ranch View Trail back to the bottom of Evergreen Mountain Trail.

Cross the road again past the parking lot and climb the steep Sister's Trail. It climbs up switchbacks past a bouldering area at the top before descending through the forest back down to the Ponderosa Trail. You'll pass many trail splits, so make sure to stay on Three Sister's Trail. It is very well marked. Take a right on Ponderosa Trail and climb up maybe 200 or so feet and then finish with a fun descent back to the parking lot.

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Jun 21, 2019
Emily Knapp
6.6mi — 1h 45m
Nov 25, 2018
Andrew G
Jul 20, 2018
Mishele Kay
Kinda busy, but not too bad. 6mi
Jun 29, 2018
Nick Kronick
Mar 19, 2018
Meredith Marx
Beautiful winter trail run. We did the evergreen mountain loop including the summit trail. 5.1mi
Dec 27, 2017
Josh M
Nov 10, 2016
also did summit viewpoint, which added 1.7mi total. 8.5mi
May 25, 2016
Austin Parker
6.4mi — 1h 05m

Trail Ratings

  4.5 from 19 votes


  4.5 from 19 votes
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in Colorado


101 Views Last Month
9,206 Since Mar 30, 2015



View from Sister's Trail.
Aug 3, 2016 near Evergreen, CO
Looking southeast from Evergreen Mountain Trail.
Mar 30, 2015 near Evergreen, CO
The Three Sisters outcropping is part of the North Sister.
Jan 10, 2017 near Evergreen, CO
Kids on the trail.
Aug 18, 2016 near Evergreen, CO


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