Home Destinations United States ColoradoTwin Sisters Peaks Hike

Hard

Hiking

🇺🇸 United States

Recorded Trail

This track was recorded on the ground by an actual expedition vehicle.

ID: US-CO-16

Twin Sisters Peaks Hike

Added on 9 Oct 2026

Logged by @trailxon15 June 2019

12.5 km dirt-trail hike near Lily Lake, climbing about 700 m to roughly 3,410 m above Estes Park.

Trail Map

Initialising Map Engine...

Trail Profile

General Instructions

Start early to avoid afternoon thunderstorms above treeline.

Mission Logs126 waypoints

Distance	Direction & Instruction	Gradient
0.0 km	E Start Point	4%
0.0 km	SE Steep Ascent	12%
0.1 km	S Steep Ascent	20%
0.3 km	E Steep Ascent	15%
0.5 km	N Steep Ascent	23%

Note: Gear suggestions are based on terrain gradient and are for reference only.

Weather check

At Start

2679m

Sampling Micro-Climate...

40.3067, -105.5372

Slide to preview conditions across the entire route • Point: 40.3067, -105.5372 @ 2679m

Quick Stats

Distance

12.52 km

Type

Hiking Trail

Elevation Range

2679m - 3412m

Max Elevation

3412 m

Max Gradient

36.4%

45%

Highlights

Lily Lake
Twin Sisters Peaks
Estes Park

Field Radio Protocol

VHF-UHF Communication

Signal Verified

Emergency Simplex

146.520MHz

Team Coordination

446.006MHz

Scout Primary

146.400MHz

Propagation Telemetry

Ridge Line

92%

Gorge Floor

18%

Sector Relay: Sector Alpha Relay• 12-18 KM Range

Regulatory Compliance

VHF/UHF frequencies are for monitoring and emergency coordination only. Transmitting on these bands may require an Amateur Radio License or regional government permits. Check local telecommunications laws before operation.

Technical Analysis

Total Ascent

+699 m

Total Descent

-681 m

Ruggedness Index

Terrain Roughness Index

Vertical displacement per km. Typical range: 0 (Smooth) to 100+ (Extreme Mountain).

0 (Smooth)50 (Steep)100+ (Extreme)

110.2

Tortuosity Index

Route Curviness Index

Ratio of actual path to straight line. Typical range: 1.0 (Direct) to 3.0+ (Switchbacks).

1.0 (Direct)2.0 (Winding)3.0+ (Serpentine)

2.49

Gradient Distribution

Flat (0-3%)2%

Moderate (3-8%)7%

Steep (>8%)91%

Surface & Hydrology

Paved0%

Unpaved100%

Surface Spectrum Analysis

Gravel

Dirt Track

91%

Water Crossings

Includes only technical water fords where the vehicle actively enters a stream or riverbed. Permanent bridges are excluded from this count.

Difficulty Analysis

SCORE: 56

Difficulty is determined by a technical multi-vector analysis of elevation profile, surface quality, and topographic intensity.

Resulting CategoryHard

Bounding Box (WGS84)

MIN LAT: 40.288992

MAX LAT: 40.306714

MIN LON: -105.537881

MAX LON: -105.518329

Point Spacing: 2.6 m • Engine: TrailX Precision GPX ANALYTICS v1.0.0

Reviews & Discussion0

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Plan this trip

Before you go: Twin Sisters Peaks Hike

Best time to go

Jul–Sep

July through September is the window for high trails and passes; many 4x4 routes stay snowbound into June or July. Start alpine hikes early to avoid afternoon thunderstorms, which are common in summer.