Skip to content
Endurance AnalyticsEndurance Analytics
  • Calendar
  • Trail Finder
  • Challenges
  • Blog
Trail RunningBiathlonSkiingSkimoOlympicsCalendarTrail FinderGPX AnalyzerRace Pace CalculatorChallengesComparePricingConnect AIBlog

Know the course before you run it

© 2026 Endurance-Analytics. All rights reserved.

Privacy PolicyTerms of ServiceRefundsContact
  1. Home
  3. Trail Running
  5. 2026
  7. HOKA Chiang Mai Thailand by UTMB
HOKA Chiang Mai Thailand by UTMB
168km16896km9639km3920km20

Inthanon 20

UTMB World Series
20.0km
December 4
Chiang Mai,
Thailand
utmb·source

· ·

Race Pace Calculator
GPX Analyzer
Trail Finder

Other races in Thailand

Read

  • Hill Training for Trail Runners: Train the Descents
  • Downhill Running Muscle Damage: Why Descents Wreck Quads
  • How to Stop Muscle Cramps While Running

Inthanon 20 — Race Profile

Distance
20.0 km
Max
1460 m
Min
995 m

About Inthanon 20

Inthanon 20 is a 20.0 km trail race of HOKA Chiang Mai Thailand by UTMB 2026 in Chiang Mai, Thailand. The race starts on December 4, 2026.

Course

By gradient, 37% of the distance is uphill, 43% downhill and 20% flat. The longest climb runs 1.9 km at an average 6.0% grade (116 m of vertical). The longest descent runs 2.6 km at 11.5% (293 m of vertical). The steepest climb averages 26.6% over 0.3 km. The steepest descent drops at 28.4% over 0.4 km. Surface: 47% road, 41% trail, and 12% smooth.

Poles

The course is runnable enough that trekking poles are not needed.

Quad damage

Quad damage risk is low (index 12 of 100): a few descents worth noticing, none that decides the result.

  • Control on the marked descents until km 10, target pace until km 16, free after that. Short descents not listed: target pace.
  • #1 · 3.0–5.5 km · 293 m D−, -11.5% · 72% of the race ahead → control
  • 9.2–13.5 km · 298 m D−, -6.8% · 33% of the race ahead → target pace

This page has the interactive elevation profile, gradient matrix, pacing and nutrition planner and weather climatology for Inthanon 20.

Other distances of HOKA Chiang Mai Thailand by UTMB 2026Chiang Dao 160 (168 km)·Elephant 100 (96.0 km)·Hmong 50 (39.0 km)

Other editions of Inthanon 202025

Official websitechiangmai.utmb.world