Skip to content
Endurance AnalyticsEndurance Analytics
  • Calendar
  • Trail Finder
  • Geo Quiz
  • 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. 2025
  7. Arc of Attrition by UTMB
Arc of Attrition by UTMB
160km16080km8040km40

Arc 25

UTMB World Series
40.0km
January 24
Coverack,
United Kingdom
utmb·source

Race Pace Calculator · GPX Analyzer · Trail Finder

Other races: United Kingdom

Read

  • Types of Runs and What Each Workout Actually Trains
  • Hill Training for Trail Runners: Train the Descents
  • Downhill Running Muscle Damage: Why Descents Wreck Quads

Full calendar: United KingdomMarathon trail race calendar

Arc 25 · Race profile

Distance
40.0km
FlatKM
48.8
Max
116m
Min
2m

About Arc 25

Arc 25 is the 40.0km trail race at Arc of Attrition by UTMB 2025 (Coverack, United Kingdom). The race starts on January 24, 2025.

Course

By gradient, 17% of the distance is uphill, 28% downhill and 55% flat. Surface: 42% trail, 27% road, 20% smooth, and 10% technical. Flat-equivalent effort: 48.8 FlatKM.

Poles

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

Quad damage

Quad damage risk is low (index 9 of 100): a few descents worth noting, none of them decisive.

Results

584 finishers completed the 2025 edition. Men's winner: Kristian Jones (Great Britain) in 2:41:25. Women's winner: Sara Alonso (Spain) in 3:04:55.

This page has the full results and splits, a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for Arc 25.

Other distances of Arc of Attrition by UTMB 2025Arc 100 (160km)·Arc 50 (80.0km)

Other editions of Arc 252026

Official websitearcofattrition.utmb.world