The Northumbrian Triathlon

The Northumbrian Triathlon on 28 June 2026 includes a full and half iron-distance in and around the stunning and challenging Kielder Water and Forest.

The swim legs take in the breath-taking serenity of the famous Kielder Water. The bike legs through the stunning valley and a raid over the Border to conquer the challenging, inspiring roads. The run legs are along the infamous Forest trails that host the testing Kielder Marathon.

Both distances can be competed solo or in a relay team of 3.

See also the Northumbrian Trail Runs held on the same day.

Organiser

Events of the North

Distances/Events

Triathlon (Swim + Bike + Run):
Half: 1.2 miles + 56 miles + 13.1 miles
Full: 2.4 miles + 112 miles + 26.2 miles

Source: https://www.runningcalendar.co.uk/event/the-northumbrian-triathlon/

Event Website: https://thenorthumbrian.com/

Coordinates: 55.1831556, -2.5346019