Circuit

Irohazaka Pass

いろは坂 · Tochigi

Irohazaka Pass track layout
Layout · 9.5 km

Circuit data

Territory · Emperor Tochigi
Length
9.5 km
Elevation
440 meters
Corners
48 hairpin turns
Surface
Excellent asphalt
Difficulty
Extreme
Type
Consecutive hairpins
Prefecture
Tochigi
Real-world
Irohazaka (いろは坂)
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Profile

About the circuit

Irohazaka Pass is one of Japan's most iconic roads, famous for its 48 hairpin turns named after the classic Japanese alphabet (Iroha). It's the territory of the fearsome team Emperor, specialists in Mitsubishi Lancer Evolution.

Background

History

Irohazaka was built in 1954 as the only route to Lake Chuzenji and Nikko's temples, a World Heritage site. Team Emperor, led by Kyoichi Sudo, chose this location for its technical curves that favor all-wheel drive.

The route

Key points

5 sections

  1. 01 Curve 'I' (い) - First curve, sets the rhythm
  2. 02 Curve 'Ha' (は) - The most technical and photographed
  3. 03 Nikko Viewpoint - Panoramic view
  4. 04 The Central Section - 20 curves without rest
  5. 05 Curve 'N' (ん) - Final decisive curve

Craft

To master it

  • Absolute mastery of hairpins
  • AWD traction use
  • Rally techniques applied to touge
  • Ultra-fast direction changes
  • Mental endurance in long races

Warning

Hazards

  • 48 tight curves that exhaust mentally
  • Heavy tourist traffic during day
  • Wild monkeys crossing the road
  • Snow and ice in winter
  • Brake fade on descents

Legend

Battles & trivia

  • The 48 curves are named after the 10th century Iroha poem
  • Emperor means absolute domination
  • Kyoichi Sudo studied each curve for years
  • It's one of Japan's most photographed roads
  • Tourist buses travel it daily

Territory

Emperor drivers

Tochigi, Japan

Kyōichi Sudō

Team Leader

Vehicle Mitsubishi Lancer Evolution III GSR 270 hp

Seiji Iwaki

Support Driver

Vehicle Mitsubishi Lancer Evolution IV RS 280 hp
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