The Northumbrian | Half Iron Distance

Do you have what it takes to conquer The Northumbrian?

Kielder Forest including the largest man-made lake in Northern Europe, Kielder Water, is a vast expanse of pine forest and hard-packed trails, stretching up to the Scottish Border and is the perfect staging ground for an ultra-distance triathlon.

The ultimate endurance test will be open to a limited number of individuals and teams to conquer the beautiful waters, forests and terrain that give Northumberland and Kielder its unique character.

The summer of 2025 will welcome the fourth edition of the event which combines scenery, fortitude, adventure, and achievement. Everything it takes to be recognised as a Northumbrian.

Highlights

• Stunning location

  Kielder Water is the HQ for this triathlon, providing incredible views across the water.

• Solo or team

  Race individually or as a team of three to divide and conquer.

• Brutal challenge

  Including steep climbs that journey into Scotland, the cycle leg is a real challenge.

There can be few greater tests of endurance and resilience and no greater sense of pride and achievement, in completing such a challenge.

This is the ultimate triathlon. The one you won't forget.