Arc 25
25 miles of stunning and challenging coastline trails
Race Category
Running Stones
2
Finals Access
Distance
40 KM
Elevation Gain
1000 M+
Start Date
Sunday 25th January 2026
Race Start
St Ives - 10:00
Max Allowed Race Time
08 Hours
Challenge yourself to 25 miles of coastal trails
From the coastline near St Ives, through Godrevy beach, and onwards to the finish at Porthtown, this action-packed 25 mile point to point race is the perfect stage for runners who want to begin their longer distance Arc adventure.
Arc 25 has an 8 hour time limit with additional aid station and safety cut-offs on route. Runners will need the ability and experience of being self-sufficient in potentially extreme weather conditions and darkness.
Runners will complete a point to point 25 mile course along the South West Coast Path, a National Trail and one of England's longest marked footpaths. The Arc 25 race starts near St Ives, before descending to join the trail and take runners across a variety of coves, sand dunes and terrains before arriving at Porthtowan.
Particular care needs to be taken at the following points to ensure you follow the official coast path.
- Hayle
- Mexico Towans
- Dunes of Doom
- Godrevy Head
For a full list of the mandatory kit (clothing and equipment) which you must have with you at all times during your race, please visit the mandatory kit webpage.
There are two aid stations available at strategic locations at regular intervals along the course. These provide basic food and drink options to runners, warm shelter and toilet facilities. A selection of other snacks including cold drinks, water, cola and Näak Energy products will be available.
There will be toilet facilities (including female toilets and toilets with period products), seating and rest areas.
There is no personal assistance ('support crew') allowed during the Arc 25 competition. Therefore, only participants will be allowed access to aid stations.
The Arc of Attrition by UTMB is a semi-autonomous / self-sufficient event with aid stations and medical cover at strategic locations on the course.
There will be no personal assistance (also known as 'support crew') allowed during the Arc 25 competition. No personal assistance is allowed at any point along the route or during the race.
However, due to the extent of the course, the likelihood of fatigue and the time of year, we strongly advise you to have someone to meet you at the finish who can drive you home after the event.
The race follows an existing waymarked route, and there will be some course waymarking. We would however recommend runners have previous trail running experience.
The route follows the undulating cliff path and cliff edges, and the terrain can be difficult, steep and arduous in places.
Depending on your pace, the later part of this race will be undertaken in the dark. You should ideally have had some experience of night time running prior to the event.