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Alderfer / Three Sisters 6-mile Loop

A highly trafficked trail system with great views.

Hiking Moderate

11 km
360 m
360 m
2-3 hrs
Low Point
2.3 km
High Point
2.5 km
Alderfer / Three Sisters 6-mile Loop Map

The Alderfer / Three Sisters trail system is a popular Front Range trail network that attracts hikers, trail runners, and mountain bikers looking to escape from the city. Due to its easy access from Denver, it's a highly trafficked trail system, and the trailhead can be completely full on the weekends. If you can, hiking during mid-week is highly recommended.


Alderfer / Three Sisters is known for its incredible views. There are several elevated lookouts throughout the park that provide spectacular views of the nearby rolling mountains, with jagged peaks in the distance.

This 6.6-mile loop tours some of the best trails in this small trail system with minimal amounts of doubling back. Along the way, it visits one of the best overlooks, but you can also add on the Brother's Lookout if you so choose The majority of the trails in this network are fairly easy, but a few sections do exceed with some challenging rocks.

Sources: https://www.jeffco.us/980/Alderfer-Three-Sisters-Park https://www.jeffco.us/facilities/facility/details/AlderferThree-Sisters-Park-1 https://dayhikesneardenver.com/alderefer-and-three-sisters-park/



Hiking along trails with some uneven terrain and small hills. Small rocks and roots may be present.

Medium Exposure

2 out of 4

The trail contains some obstacles such as outcroppings and rock which could cause injury.


2 out of 4

Away from help but easily accessed.

Best time to visit

between May and November


  • Picturesque
  • Family friendly

Similar routes nearby

Guidebooks in this area