The Northumbrian Triathlon

Name: The Northumbrian Triathlon
Start: 2026-06-28
End: 2026-06-28
Location: Kielder

At a glance

SwimLake
Wetsuitmandatory
SettingRural
StartKielder Water and Forest Park, Northumberland

Kielder Water swim
bike route crosses border into Scotland
hosts British & English Middle Distance Championships
only UK triathlon crossing two countries

Typical race-day conditions

Around race day in Kielder: 14°C typical, 3.4 mm rain, 20 km/h wind. (10-year Open-Meteo average.)

Distances offered (2)

Middle (70.3)

1,900 m swim · 90 km bike · 21.1 km run

Entry fee not published · non-drafting

CourseLaps
SurfaceRoad
Run terrainforest trails (Kielder Marathon route)
Laps1
SwimLake
Cut-off9 hours overall

Full (Iron)

3,800 m swim · 180 km bike · 42.2 km run

Entry fee not published · non-drafting

CourseLaps
SurfaceRoad
Run terrainforest trails (Kielder Marathon route)
Laps2
SwimLake
Cut-off17 hours 45 minutes overall

Common questions

What triathlon formats does The Northumbrian Triathlon offer?

The Northumbrian Triathlon currently lists Middle (70.3) (1,900 m swim · 90 km bike · 21.1 km run); Full (Iron) (3,800 m swim · 180 km bike · 42.2 km run) on raceindex.org.

Where can I verify The Northumbrian Triathlon details?

Use the linked official event website alongside the raceindex.org provenance and methodology notes shown on this page.

Official event website ↗

Loading triathlon event

At a glance

Typical race-day conditions

Distances offered (2)

Middle (70.3)

Full (Iron)

Common questions

What triathlon formats does The Northumbrian Triathlon offer?

Where can I verify The Northumbrian Triathlon details?

How we calculated this

The Northumbrian Triathlon

At a glance

Typical race-day conditions

Distances offered (2)

Middle (70.3)

Full (Iron)

Common questions

What triathlon formats does The Northumbrian Triathlon offer?

Where can I verify The Northumbrian Triathlon details?

How we calculated this