Home Destinations India West BengalOld Silk Route: Kalimpong to Zuluk Drive

Moderate

On-Road

🇮🇳 India

Satellite

This track was identified and mapped via high-resolution satellite imagery.

ID: IN-WB-04

Sikkim protected-area permit needed beyond Rongli; rules differ for Indian and foreign nationals

Sikkim Tourism

Old Silk Route: Kalimpong to Zuluk Drive

Added on 9 Oct 2026

Logged by @mk47

Mountain drive on the old Kalimpong–Pedong mule route toward Jelep La, climbing from Kalimpong through Rongli to the hairpins of Zuluk in East Sikkim.

Trail Map

Initialising Map Engine...

Trail Profile

General Instructions

Narrow mountain road; arrange the permit through a registered operator and drive in daylight.

Mission Logs72 waypoints

Distance	Direction & Instruction	Gradient	Gear Gearing suggestions are defensive and based on terrain profile. Always assess real-time conditions and the path ahead personally.
0.0 km	N Start Point	-1%	2H
2.0 km	W Continue on track	4%	2H
4.0 km	NE Continue on track	4%	2H
6.0 km	SE Continue on track	-1%	2H
8.0 km	NE Continue on track	4%	2H

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

Weather check

At Start

1157m

Sampling Micro-Climate...

27.0600, 88.4702

Slide to preview conditions across the entire route • Point: 27.0600, 88.4702 @ 1157m

Quick Stats

Distance

89.02 km

Type

On-Road Sector

Elevation Range

576m - 2735m

Max Elevation

2735 m

Max Gradient

28.6%

22.8%

Highlights

Pedong
Zuluk hairpin bends
Thambi viewpoint

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

+3107 m

Total Descent

-1534 m

Ruggedness Index

Terrain Roughness Index

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

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

52.1

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)

2.41

Gradient Distribution

Flat (0-3%)9%

Moderate (3-8%)46%

Steep (>8%)45%

Surface & Hydrology

Paved80%

Unpaved20%

Surface Spectrum Analysis

Asphalt

80%

Gravel

14%

Dirt Track

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: 39

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

Resulting CategoryModerate

Bounding Box (WGS84)

MIN LAT: 27.060006

MAX LAT: 27.250999

MIN LON: 88.470233

MAX LON: 88.775489

Point Spacing: 26.3 m • Engine: TrailX Precision GPX ANALYTICS v1.0.0

Reviews & Discussion0

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Plan this trip

Before you go: Old Silk Route: Kalimpong to Zuluk Drive

Best time to go

Oct–Mar

October to March suits most of the country. The southwest monsoon (June to September) floods the Western Ghats and Kerala, but it is also the main season for Ladakh and Spiti, where high passes are usually open only from June to October.