HomeAll TrailsGrožnjan Istrian Hills MTB Ride
Hard
Cycling
🇭🇷 Croatia
Recorded Trail

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

ID: HR-18-01

Grožnjan Istrian Hills MTB Ride

Added on 30 Sep 2026
Logged by @trailxon25 November 2018

Mountain bike loop around the hilltop artists' town of Grožnjan above the Mirna valley.

Trail Map

Initialising Map Engine...

Trail Profile

General Instructions

Rocky white roads; carry water in summer.

Weather check

At Start
286m

Sampling Micro-Climate...

45.3793, 13.7225

Slide to preview conditions across the entire route • Point: 45.3793, 13.7225 @ 286m

Quick Stats

Distance
35.38 km
Type
Off-Road Trail
Elevation Range
70m - 388m
Max Elevation
388 m
Max Gradient
21.6%
45%

Highlights

  • Grožnjan old town
  • Parenzana trail
  • Mirna valley

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

+1002 m

Total Descent

-948 m

Ruggedness Index

Terrain Roughness Index

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

0 (Smooth)50 (Steep)100+ (Extreme)
55.1

55.1

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)
5.49

5.49

Gradient Distribution

Flat (0-3%)35%
Moderate (3-8%)32%
Steep (>8%)33%

Surface & Hydrology

Paved2%
Unpaved98%

Surface Spectrum Analysis

Asphalt
2%
Gravel
20%
Dirt Track
78%
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: 68

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

Resulting CategoryHard

Bounding Box (WGS84)

MIN LAT: 45.365954
MAX LAT: 45.384506
MIN LON: 13.710229
MAX LON: 13.760095

Point Spacing: 9.8 m • Engine: TrailX Precision GPX ANALYTICS v1.0.0

Reviews & Discussion0

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