Hard
Hiking
🇨🇭 Switzerland
Recorded Trail

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

ID: CH-GR-03

Preda to Filisur Hike

Added on 9 Oct 2026
Logged by @trailxon13 May 2010

21 km hike from Preda down the Albula valley to Filisur on dirt and rocky paths, topping out near 1,980 m.

Trail Map

Initialising Map Engine...

Trail Profile

General Instructions

Use the Rhaetian Railway to return to Preda, and check trail conditions early in the season when snow lingers.

Weather check

At Start
1844m

Sampling Micro-Climate...

46.5884, 9.7774

Slide to preview conditions across the entire route • Point: 46.5884, 9.7774 @ 1844m

Quick Stats

Distance
21.34 km
Type
Hiking Trail
Elevation Range
1051m - 1978m
Max Elevation
1978 m
Max Gradient
36%
44.7%

Highlights

  • Albula Railway
  • Bergün
  • Landwasser Viaduct

Field Radio Protocol

VHF-UHF Communication

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

+609 m

Total Descent

-1330 m

Ruggedness Index

Terrain Roughness Index

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

0 (Smooth)50 (Steep)100+ (Extreme)
90.9

90.9

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)
1.79

1.79

Gradient Distribution

Flat (0-3%)21%
Moderate (3-8%)30%
Steep (>8%)49%

Surface & Hydrology

Paved2%
Unpaved98%

Surface Spectrum Analysis

Asphalt
2%
Dirt Track
59%
Rugged/Rock
39%
Water Crossings

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

0

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: 46.583885
MAX LAT: 46.675422
MIN LON: 9.682433
MAX LON: 9.779848

Point Spacing: 3.9 m • Engine: TrailX Precision GPX ANALYTICS v1.0.0

Reviews & Discussion0

Expedition notes, route modifications, and surface updates shared by the community.

Log Expedition Notes

You must be signed in to contribute reviews

Authenticate Identity

Be the first to review

No reviews registered for this technical sector yet. Share your experience, surface observations, or gear recommendations!

Plan this trip

Before you go: Preda to Filisur Hike

Best time to go

Apr–Oct

Late June to early October is the season for passes above 2,000 m, which can hold snow into July on north faces. Ticino routes are pleasant from spring through late autumn.

Navigate it offline

Download this trail and its map in the free TrailX app for turn-by-turn guidance, off-route alerts and GPS recording without signal.

Open in TrailX app