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Nestled in the rugged splendor of Northumberland, the Northumbrian Triathlon beckons adventure-seekers to conquer a multisport odyssey. This off-road event celebrates the region s scenic wonders, featuring a captivating swim in the serene Kielder Water, a bike leg winding through the stunning valley, and a run along the renowned Kielder Forest trails. Whether tackling the challenge solo or as part of a relay team, participants will be immersed in the breathtaking landscapes of England s stunning northeast, making this a true test of endurance and a rewarding experience for all.
2026-06-28
Kielder, Hexam, Northumberland, UK
Organized by
Northumbrian Trail Runs