Twin Sisters Peak via Forsythe Canyon
Twin Sisters Peak via Forsythe Canyon
3.2
(18)
79
hikers
01:38
5.27km
300m
Hiking
Hike the easy 3.3-mile Twin Sisters Peak via Forsythe Canyon trail for rewarding summit views of the Front Range and Boulder peaks.
Last updated: February 26, 2026
Tips
Your route passes through a protected area
Please check local regulations for:
Waypoints
Start point
Parking
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770 m
Highlight • Trail
Tip by
5.24 km
Highlight • Summit
5.27 km
End point
Way Types & Surfaces
Way Types
2.03 km
1.90 km
1.27 km
< 100 m
Surfaces
4.91 km
349 m
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Elevation
Highest point (2,620 m)
Lowest point (2,330 m)
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Weather
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Today
Thursday 7 May
11°C
-1°C
15 %
Additional weather tips
Max wind speed: 23.0 km/h
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This route was planned by komoot.
The trail can be accessed from the intersection of CR 68J and CR 359, or from Gross Reservoir parking by following Lakeshore Drive/Co Rd 68J. The primary starting point is the Forsythe Canyon Trailhead.
The trail is generally dog-friendly, but always check local regulations for the Roosevelt National Forest regarding leash requirements and waste disposal to ensure a pleasant experience for everyone.
The trail is enjoyable throughout much of the year. Spring and fall offer pleasant temperatures and beautiful scenery, including wildflowers. Summer is also popular, but be prepared for potential afternoon thunderstorms. Winter hiking is possible, but expect snow and ice, which can add to the challenge.
The trail is managed by the U.S. Forest Service. A USFS permit may be required for parking at certain access points. It's always best to check the latest regulations with the Roosevelt National Forest before your visit.
The trail features varied terrain, meandering through meadows with scattered pine trees and wildflowers. It has partially shaded sections and generally steady grades, though some parts ascend steeply through tighter valleys. Hikers may encounter eroded sections, small loose rocks, narrow pathways, and occasionally washed-out areas or downed trees.
The trail offers fleeting views of Gross Reservoir and the surrounding hills. The main highlight is the Twin Sisters Peak summit, which provides unobstructed views of the Front Range to the west and popular peaks near Boulder to the east.
Yes, the route also passes through sections of the Twin Sisters Peak Trail, Forsythe Spurs Road, and Winiger Ridge Road.
While generally considered moderate, some sections are steeper, and the presence of eroded paths and obstacles like downed trees can add to the challenge. Families with older children or those accustomed to hiking may find it suitable, but it might be challenging for very young children or those new to hiking.
This Twin Sisters Peak trail via Forsythe Canyon is a distinct, shorter, and less strenuous hike compared to its more famous namesake near Lily Lake in Rocky Mountain National Park. This route offers a more serene experience with fewer visitors, making it an appealing option for those seeking solitude without the greater elevation gain and scrambling required on the RMNP trail.
As the trail is located in Roosevelt National Forest, you might encounter various wildlife common to the Front Range, including deer, elk, and a variety of bird species. Keep an eye out and maintain a respectful distance.
Given the varied terrain and potential for steep sections, sturdy hiking shoes are recommended. Bring plenty of water, snacks, sun protection, and layers of clothing as weather can change quickly. A map or GPS device is also advisable.