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Built on bad decisions in Boulder, CO.

Arc of Attrition Arc 50

Draft Listing
  1. UTMB
  2. 2026 Edition
UTMB World Series3 Stones

50 miles around the tip of England in the depths of winter

Directions
Registration OpensMarch 25, 2025
DeadlineDecember 14, 2025
Calculate UTMB Lottery Odds3 Running Stones
This event took place on January 24, 2026
All trail races in United Kingdom→
January 24, 2026
Saturday 9:00am GMT+1 start
Porthtowan, England
United Kingdom
80.5 km
Point to Point Course
2,525 m
Elevation Gain
Open Registration
No lottery
No Service Requirement
Does not require trail or volunteer work
No Qualifier
No qualifier race required
Challenging
Some ultra experience recommended
Links
WebsiteInstagramFacebook
2015
Established
476
Field Size
73%
Finish Rate

What Makes It Great

The Arc 50 is a 50-mile point-to-point race along the South West Coast Path from the dramatic clifftop setting of The Minack Theatre at Porthcurno to the finish at Porthtowan. The route sweeps around Land's End and Cape Cornwall, through the old tin-mining heartland of Pendeen, the remote headlands above Zennor, the estuary lowlands at St Ives, and up the north Cornish coast to Portreath and the finish. No support crew permitted — runners must be fully self-sufficient, carrying mandatory kit, managing 2,550 metres of elevation on rugged coastal terrain in January conditions that will include running in darkness.

Difficulty

Intermediate
6/10

Some ultra experience recommended

Technical Terrain
Steep Climbing
Night Running
Variable Weather
Exposed Ridgeline
Strict Cutoffs

Arc of Attrition Arc 50

Porthtowan, England, United KingdomJanuary 24, 2026

January 24, 2026
Course map for Arc of Attrition Arc 50
DistDistance80.5 km
GainElevation Gain2,525 m
LimitCutoff15.5 h
Steep ClimbingNight RunningVariable WeatherExposed RidgelineStrict Cutoffs

Entry Timeline

Registration OpensMarch 25, 2025
Registration DeadlineDecember 14, 2025
Race DayJanuary 24, 2026

Lottery

This event uses open registration - no lottery entry required.

Qualifier

This event does not require a qualifier for entry.

Service Requirement

This race does not have a service requirement for entry.
80.5 km
Distance
Point to Point
Route
15h30m
Cutoff Time
47 m
Average Elevation
2,525 m
Total Ascent
2,460 m
Total Descent
120 m
High Point
2 m
Low Point
Course map
Launch Course Explorer

Aid Stations

LocationkmElevation
Start
Start
0.260 m
AS05 Lands
Aid Station
7.665 m
AS06 Pende
Finish
23.572 m
AS07 Lelan
Aid Station
51.35 m
AS08 Godre
Aid Station
61.46 m
AS09 Portr
Aid Station
73.16 m
Finish
Finish
80.3100 m

Sign in to see cutoffs, crew access, drop bags, and services for every aid station.

On-Site Camping Available

Camping available at Mount Pleasant Eco Park, the main event venue and finish area. Must be booked through the Eco Park's website in advance if available. Runners may not sleep in cars in the event car park.

Crew Access Points

Pacer Rules

No Pacers Allowed

Crew Rules

No Crew Allowed
Weather
Cold/Hypothermia Risk

January conditions can be cold and wet on the exposed coast. Cold weather kit is mandatory for 2026.

Rapid Weather Changes

Rapidly changing Atlantic weather is typical for Cornwall in January. Wind and rain should be expected.

Gear Rules

Trekking poles allowed

Required Gear

No required gear specified

Recommended Gear

No recommended gear specified

Race reports from other Arc of Attrition events

Arc of Attrition 2025 ResultsArc of Attrition Arc 100
By Electric Cable Car • 2025
Tales from the Arc of AttritionArc of Attrition Arc 100
By Camino Ultra • 2025
CLC Striders at UTMB Arc of Attrition 2025Arc of Attrition Arc 100
By CLC Striders • 2025

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