Events of the North
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Families on Track
Latest News
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Basket
Checkout
Volunteer
Events
Events of the North
Events
Kielder Forest, Northumberland
The Northumbrian
Marathon
Trail
Triathlon
Ultra Run
29th June 2025
6:00 am
Kielder Forest, Northumberland
A full and half iron-distance triathlon and ultra trail runs in and around the stunning and challenging Kielder Water and Forest. An event combining scenery, fortitude, adventure, and achievement.
Latest News
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Records broken as thousands of runners enjoy the sun in Sunderland
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