Course
Key dates
- ★Race daySun 22 Nov 2026
About
The CI 100k is a challenging 100km race in Jersey, offering runners a chance to experience the beautiful and rugged trails of the island. The course features stunning coastal scenery, rolling hills, and technical terrain that will test the endurance and skill of participants. The event is known for its inclusive and supportive atmosphere, making it a must-do for trail running enthusiasts.
Save The Ci 100k Jersey to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
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Jersey Half Marathon
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The Intertidal
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Jersey Marathon
A Channel Islands marathon that draws runners from across the world
A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.