St Helier, Jersey

The CI 100K


What: 100km Race

Where – Starting at St Catherines Breakwater

When: Friday 29th November (tbc) @10pm

Start List here

Entry Options are now live!! 

Solo Race – 40 Places Only – £85

2 Man Relay – 20 Places Only – £130

3 Man Relay – 10 Places Only – £160

Course Details – Starting at 10pm the race will set off from the end of St Catherines Breakwater. Travelling along the North Coast of Jersey to the far left at Les Landes, carrying on along St Ouens Beach, before carrying on to the turn around point at Portelet Carpark (TBC). This is an out and back course, the cut off time is 14 hours and there will be aid stations at every 10 miles. Cutoffs will be in operation at every checkpoint (to be communicated) 

Mandatory kit requirements are as follows: 

-A bottle or receptacle to carry water – at least 500ml.

-Energy Gels or Snacks 

-A charged mobile phone

-Suitable running shoes for trails

-Waterproof jacket and trousers if raining and a warm base layer
-Warm hat/buff
-Clothing that will enhance visibility
-1 x Headtorch and spare batteries or spare head torch


The race is not only the longest race in the Channel Isles, it will take place at night starting at 10pm in the middle of winter. We will be there to support you but make no mistake this will be a tough challenge. Great prep for those doing further races in the early part of 2020 (Arc of attrition, The Spine etc) 

Entries now open – please see below!

How to enter:

Entry Form

Solo Payment

C.I.100k Solo Entry

Entry for the C.I.100k Solo Event


2 Man Relay Payment

C.I.100k 2 Man Relay Entry

Entry for the C.I.100k 2 Man Relay Please make payment and also complete entry form for both runners to complete entry


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