Active Northumberland Gravel Duathlon

A full weekend of running and cycling celebrating everything that's amazing about Kielder Water, northern Europe's largest man-made lake. 

Surrounded by lush pine forest and with hard-packed trails weaving around its perimeter, the water is the perfect location for these popular races.

2,500 runners and duathletes will descend on Northumberland to test themselves over off-road courses, including the headline marathon, half marathon, 10K, standard-distance duathlon and two junior races.

With breathtaking views and professionally organised events, the Kielder Marathon Weekend is definitely one for your calendar!

Highlights

• wild location

  Kielder Water is a spectacular backdrop for these races, set amidst verdant pine forests.

• stunning course

  Mostly off-road, the routes cover hard-packed trails with some undulating terrain.

• sell-out event

  The weekend is growing in popularity and regularly attracts thousands of athletes and spectators.

• family-friendly weekend

  With two separate junior races, there's something for everyone at Kielder!