When is the Arc of Attrition 100 2027?

The Arc of Attrition 100 is on Friday, 22 January 2027, with the start at 13:00 local time.

How hilly is the Arc of Attrition 100?

The course has 5,507 m of climbing and 5,430 m of descent. We rate it mountain. It is a point to point course on trail.

What is the weather usually like at the Arc of Attrition 100?

Around the race date in 2016–2025, the temperature at the 13:00 start averaged 9°C, rising to about 9°C during the race, with 77% humidity. It rained on about 21% of those days.

How do you get a place in the Arc of Attrition 100?

Entry is first come, first served. The standard entry fee is about $395. Check the official site for the current registration dates.

What is the cut-off time for the Arc of Attrition 100?

Runners have 37 hours to finish.

UTMB World Series173 kmTrail🇬🇧 Coverack, United Kingdom

Arc of Attrition 100

Friday, 22 January 2027In 3 months · Start 13:00

Official site Hotels & flights

Arc of Attrition: 2 distances

Distance	Date	Climb	Highest point	Start	Cut-off	Entry
173 kmArc of Attrition 100	22 Jan 2027	5,507 m	—	13:00	37 h	$395
22.1 kmArc of Attrition 20K	24 Jan 2027	744 m	—	11:00	4 h	$155

A winter 100-miler on the South West Coast Path around the tip of Cornwall, from Coverack past Land's End to Perranporth, much of it in darkness.

The Arc of Attrition 100 is a trail 173 km ultra in Coverack, United Kingdom, on Friday, 22 January 2027, starting at 13:00. The point to point course has 5,507 m of elevation gain (mountain), and the start temperature on race day has averaged 9°C in recent years. Entry is first come, first served, and the standard fee is about $395. The cut-off is 37 hours.

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Facts checked 10 Oct 2026 against arcofattrition.utmb.world, in.register-utmb.world.

Elevation gain

5,507 m

Mountain · ↓ 5,430 m

Start altitude

32 m

above sea level, from terrain data

Temp at start

9°C

Peaks around 9°C

Entry fee

≈ $395

Open entry

Finishers

—

typical year

Course

Point to point

37h cut-off

Getting thereFly into CWL (Cardiff), about 196 km from the start

Plan your trip to Coverack

Race weekends book up early. Searches are set for the race dates.

Photo: Myself (Adrian Pingstone). · Public domain

Hotels near the start lineThu 21 Jan – Sat 23 Jan · 2 nights · closest to the start firstSee hotels on Booking.com Flights to CoverackArrive Wed 20 Jan, fly home Sun 24 JanSee flights on Google Flights

Things to do in CoverackKlook Mobile data in United KingdomAiralo Airport transfer from CWLKiwitaxi Rent a carEconomybookings

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Arc of Attrition 100 course map

A detailed route is not available for this race yet. The marker shows the race location.

Arc of Attrition 100 elevation profile

Mountain: about 5,507 m of climbing and 5,430 m of descent. A detailed profile isn’t available for this race yet.

Arc of Attrition 100 race-day weather

At start

9°C

Peak during race

9°C

Humidity

77%

Chance of rain

21%

Wind

23 km/h

22 January in past years

Historical averages for 22 January ±3 days, 2016–2025, from 13:00 for 5 hours (70 days sampled). Source: Open-Meteo / ERA5.

Arc of Attrition 100 finish times by age group

Top 10 overall, average of the last 5 editions

Men 21:57:55Women 27:28:14

Age	Men	Women
Under 30	24:05:20*	30:24:09*(3)
30–39	24:01:26*	30:12:19*(4)
40–49	23:18:56	30:12:00(8)
50–59	28:06:23	33:02:06(2)
60+	32:58:11(6)	—

Average finish time of the 10 fastest runners in each age group, 2024–2026 (3 editions, gun time). * The race uses different age groups; mapped to the closest band. Fewer than 10 finishers: averaged over those who finished.

Runner reviews

What time could you run here?Adjust your goal time for this course’s hills and typical race-day weather.Race time calculator →

Arc of Attrition 100: questions and answers

When is the Arc of Attrition 100 2027?: The Arc of Attrition 100 is on Friday, 22 January 2027, with the start at 13:00 local time.
How hilly is the Arc of Attrition 100?: The course has 5,507 m of climbing and 5,430 m of descent. We rate it mountain. It is a point to point course on trail.
What is the weather usually like at the Arc of Attrition 100?: Around the race date in 2016–2025, the temperature at the 13:00 start averaged 9°C, rising to about 9°C during the race, with 77% humidity. It rained on about 21% of those days.
How do you get a place in the Arc of Attrition 100?: Entry is first come, first served. The standard entry fee is about $395. Check the official site for the current registration dates.
What is the cut-off time for the Arc of Attrition 100?: Runners have 37 hours to finish.

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<a href="https://irun42.com/race/arc-of-attrition-100m" title="Arc of Attrition 100 on iRun42"><img src="https://irun42.com/badge/arc-of-attrition-100m.svg" width="300" height="120" alt="Arc of Attrition 100: course, elevation and race-day weather on iRun42" /></a>

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