The Northumbrian
The Northumbrian is the Ultimate Endurance Event staged around Kielder Water and Forest Park in Northumberland. It features full Iron Distance and Half Iron Distance triathlons, plus Team relay options, and UTMB-index ultra-trail runs. Distances include 2.4 miles swim / 112 miles bike / 26.2 miles run for the full triathlon, and 1.2/56/13.1 miles for the half.
Trail events include a 50K Ultra (48km with about 700m ascent) and a 20K Trail Run (27km with about 400m ascent). The course weaves lakes, forests and valley roads, delivering stunning scenery and demanding terrain. The entry includes timing, a finisher medal and race jersey, with on-course support and parking.
Limited entries preserve a focused, supportive atmosphere. Visit the organization's website for the most recent information.
Always double-check with the organizer's website – things can change, and we might have sprinted past a few details!
