The Northumbrian

About the Event

Explore the breathtaking landscapes of Kielder Water and Forest as you challenge yourself in both full and half-iron distance triathlons or ultra trail runs during this ultimate endurance event. Immerse yourself in a mix of stunning waters, dense forests, and varied terrain that make Northumberland’s Kielder region truly unique.
Competitors will face the rigorous test of crossing different terrains while enjoying panoramic views and serene natural surroundings. This exclusive gathering is designed for a select group of athletes who seek to push their limits in an environment rich with beauty and adventure.
The event offers both individual participation and team options, catering to all levels of endurance enthusiasts eager to experience Kielder’s challenging yet rewarding trails and waterways. Prepare yourself for an unforgettable journey where the blend of nature and competition creates a truly memorable sporting experience.
Be part of this limited number of athletes who will have the opportunity to test their strength against one of Northumberland's most captivating settings, making each stride count in this awe-inspiring race setting.

Races Offered

20K Trail Run (27km)

Sep 27, 2025

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Distance — 27K

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Type — Running

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07:45

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£40.00

50K Ultra Trail Run

Sep 27, 2025

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Distance — 50K

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Type — Running

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07:45

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£65.00

Full Iron Distance

Sep 28, 2025

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Distance — Swim 3.8K Bike 180.2K Run 42.2K

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Type — Running

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05:15

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£330.00

Half Iron Distance

Sep 28, 2025

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Distance — Swim 1.9K Bike 90.1K Run 21.1K

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Type — Running

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05:15

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£215.00

Team Full Iron

Sep 28, 2025

straighten

Distance — Swim 3.8K Bike 180.2K Run 42.2K

terrain

Type — Running

timer

05:15

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£116.67

Team Half Iron

Sep 28, 2025

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Distance — Swim 1.9K Bike 90.1K Run 21.1K

terrain

Type — Running

timer

05:15

sell

£76.67

Weather History

These values represent the 3-year monthly averages for June in Hexham.

thermostat Temperature

10.4° / 18.5°

wb_sunny Feels like

8.0° / 15.7°

light_mode Avg sunshine hours

11h 7m

water_drop Avg rainfall

2.0 mm

ac_unit Avg snowfall

—

air Avg wind speed

14.0 km/h (Gentle breeze)

opacity Sweat loss rate

Low

terrain Course conditions

Firm and slightly soft

sunny Max UV Index

Moderate (5.6)

humidity_mid Humidity

76.9%

wb_twilight Sunrise

04:30

nightlight Sunset

21:46

About Hexham

Learn more about the host city, Hexham.

Hexham is a small market town in the Tyne valley of Northumberland, 24 miles west of Newcastle. It's an attractive place with a medieval abbey and jail, and a good base for exploring Hadrian's Wall to the north. Also within a short drive are Northumberland National Park and North Pennines AONB. In 2021 Hexham had a population of 10,941.