Event Overview
| Date | Jan 22-24, 2027 |
|---|---|
| Location | Coverack to Perranporth Airfield, Cornwall, United Kingdom |
| Format | Fixed-Distance |
| Terrain | Trail |
| Region | Europe |
| Distance / duration | 173 km |
| Course model | Point-to-point |
| Edition note | The organizer lists registration open for 2027. The published course closure is Sunday, January 24 at 2:30 AM; follow your assigned wave and the official checkpoint limits. No race-day registration or waiting list is offered. |
| Elevation gain | 5,507 m |
| Cutoff | 37 hours; use the official wave and checkpoint schedule |
| Start | 1:00 PM Friday, wave starts |
| Highlights | Winter Coastal Ultra, South West Coast Path |
Course & Terrain
Point-to-point on exposed coastal paths from Coverack around Cornwall’s western peninsula to Perranporth Airfield.
Entry & Logistics
| Registration and fees | Check the official event website for current availability, deadlines, prices, taxes, and refund terms. |
|---|---|
| Qualification | Minimum age 20 and previous long-distance experience. The organizer recommends a UTMB Index of at least 380; this is a recommendation rather than a stated mandatory threshold. |
| Support model | Aid stations provide food, drink and shelter; runners must remain self-sufficient between them. |
| Crew / pacers | A support crew is strongly advised but may assist only at designated locations. Accompaniment by an unregistered runner outside permitted zones is prohibited. |
| Drop bags | One organizer-issued 30-litre bag is transported to Land’s End. Poles cannot be placed in the bag. |
| Logistics note | Mandatory kit check and bib collection take place Thursday, January 21, 2:30–8:00 PM at Perranporth Airfield. Friday coach loading starts at 10:30 AM; spectators are not allowed at the Coverack start. |
Why This Race Matters
First held in 2015, the Arc has grown from a small 100-mile race into a Cornwall trail festival. This entry covers the 100M race; the shorter distances have separate starts.
Preparing for a Race Like Arc of Attrition 100M
The fixed-distance race guide covers the format as a whole. These guides go deeper:
- Walking strategy for ultramarathons: When and how to walk by terrain, effort and cutoffs.
- Crew and aid-station strategy: Crew tables, aid stops, drop bags and runner preferences.
- Hydration and sodium for ultramarathons: Fluid, sodium, thirst, sweat rate and hyponatremia risk.
- Tapering for ultramarathons: Plan the taper and race week around your own recovery.
Planning Notes
- Prepare for sleep decisions, weather swings, and aid-station discipline. The distance is only one part of a multi-day fixed-distance race.
- Train for terrain-specific fatigue. Technical trails and mountain courses demand downhill durability, hiking efficiency, and reliable night lighting.
- The directory does not mark this as having simpler logistics. Confirm qualification, terrain, support, registration, medical, and withdrawal requirements before planning around it.
- Long periods of darkness and exposed winter cliff paths
- Carry the full mandatory kit throughout the race
Related Preparation
- Open the Fixed-Distance format guide
- Compare all race formats
- Use the timed-race pace calculator
- Plan checkpoint arrivals and cutoff buffers
- Build a crew and drop-bag plan
- Build a race-specific gear checklist
Verification & Sources
Verification scope: the listed edition's date, location, format, and available logistics were checked against the event-specific official sources below during the directory review dated October 15, 2026. Organizers can revise details after review.
- Official 2027 Arc 100M race details — https://arcofattrition.utmb.world/races/Arc100M
- Official 2027 schedule, including Sunday course closure — https://arcofattrition.utmb.world/runners/eventschedule
- Official entry conditions and eligibility — https://arcofattrition.utmb.world/registration-conditions
- Official race regulations — https://arcofattrition.utmb.world/regulations
- Organizer’s event history — https://arcofattrition.utmb.world/
- Multiday Running event directory review scope: October 15, 2026.