Limited time offer

Ends soon

The Northumbrian

Name: The Northumbrian
Start: 2026-06-26T23:00:00.000Z
End: 2026-06-26T23:00:00.000Z
Location: Hexham NE48 1BT, UK

1 / 4

From £330

LIMITED TIME OFFER

1 +

The Northumbrian

Not quite ready to register?

Save this event for later and come back to it when you're ready.

Price rises soon

£40 - £330

About

A full and half-iron distance triathlon and ultra trail runs, in and around the stunning and challenging Kielder Water and Forest. The ultimate endurance test will be open to a limited number of individuals and teams to conquer the beautiful waters, forests and terrain that give Northumberland and Kielder its unique character.

20K Trail Run (27km), 50K Ultra Trail Run, Full Iron Distance, and 3 more

View details

Sat, Jun 27, 2026 - Sun, Jun 28, 2026

View logistics

Hexham, United Kingdom

View location

Where and when

Location

Hexham NE48 1BT, UK

Start times

Saturday, Jun 27, 2026

20K Trail Run (27km): 8:45 AM50K Ultra Trail Run: 8:45 AM

Sunday, Jun 28, 2026

Full Iron Distance: 6:15 AMHalf Iron Distance: 6:15 AMTeam Full Iron: 6:15 AMTeam Half Iron: 6:15 AM

Event summary

Here are the distances available for The Northumbrian

1 / 2

Full Iron Distance

2.4mi

112mi

26.2mi

£330

Half Iron Distance

1.2mi

56mi

13.1mi

£215

Team Full Iron

2.4mi

112mi

26.2mi

£116.67

Team Half Iron

1.2mi

56mi

13.1mi

£76.67

Route information

FULL & MIDDLE DISTANCE TRI - AQUABIKE - UTMB INDEX TRAIL RUNS

Full Iron Distance Tri

Swim 2.4 miles – cut off time 2HRS 20 after race start. 2 laps in the breath-taking serenity of the famous Kielder Water, entry and exit via slipway. Wetsuits are mandatory.

Bike 112 miles – cut off time 10HRS 30 after race start. 2 laps through the stunning valley and a ride over the Border to conquer the challenging, inspiring roads. The majority of the route will be on open roads however there will be some partial closures for safety, the route will be fully marshalled including Moto marshals. Non-drafting, bikes must comply with British Triathlon rules.

Run 26.2 miles – cut off time 17HRS 45 after race start. 4 laps of Bull Crag covering the infamous Forest trails that host the testing Kielder Marathon. Cut off time to start the run leg is 10 hours 30 minutes after race start.

Transition area will be in the large lower car-park at Waterside

Half Iron Distance Tri

Swim 1.2 miles 1 lap in the breath-taking serenity of the famous Kielder Water, entry and exit via slipway. Wetsuits are mandatory.

Bike 56 miles 1 lap through the stunning valley and a ride over the Border to conquer the challenging, inspiring roads. The majority of the route will be on open roads however there will be some partial closures for safety, the route will be fully marshalled including Moto marshals. Non-drafting, bikes must comply with British Triathlon rules.

Run 13.1 miles 2 laps of Bull Crag covering the infamous Forest trails that host the testing Kielder Marathon

Cut off: 9 hours

Team Tri

Alternatively take on either of these two courses as a team of 3 to share the hard work!

Run the Trails at Kielder

Take advantage of the newly created trails at Kielder with the Northumbrian 50K Ultra and 20K runs. Starting at Kielder Waterside while the Northumbrian Triathletes are completing their bike leg, you will join the triathlon run loop after completing a spectacular 25KM loop taking in the new Lonesome Pine trail and some of the best views of Kielder Water.

Get some extra support from your friends and family over the final two laps of bull crag, where you will pass through the event village before finishing alongside your fellow runners and triathletes at the lake’s edge.

What's included

The Northumbrian Cycling Jersey (Individual Full and Half only)
Swim Cap
Electronic Chip Timing
On Course Support
On Course Nutrition
Medal and Finisher’s Goodybag
The Northumbrian Cycling Cap (Team only)
NEW EVENT - Race T-shirt for 20K and 50K entries
Plus Electronic Chip Timing, On Course Support, On Course Nutrition, Medal and Registration Goody-bag

How to get there

Hexham NE48 1BT, UK

Get full directions

Parking

There will be a number of event car parks within a mile of the event site. If arriving for registration on Saturday you can park at Kielder Waterside while registering. On event day please use event car parks only, Waterside will not be accessible by car.

Hotels and Accommodation

Events of the North has partnered with Let's Do This to bring you some of the best hotel rates close to the startline.

Find your room

Event day logistics

Saturday 27th June

7:00 Registration open

8:45 20K and 50k Trail Runs Starts

13:00 - 20:00 Registration open for Tri races

Sunday 28th June

04:30 Registration open

06:15 Tri Races start

Age Requirements

All participants must be:

18+ for the Individual Full Distance Tri
17+ for the Individual Half Distance Tri
17+ for the Team Full Distance
16+ for the Team Half Distance
18 + for the 50K Trail Run
16+ for the 20K Trail Run

Race Packs

Your race number, timing chip & race information pack will available to collect at registration. Race guides will also be available for download on the website and sent on email prior to the event.

Registration

ALL participants must attend a registration - you are recommended to do this on the Saturday, the day before the race. Transition will also be open to rack bike with security in place over night. Registration will then be open from 04:30am on Sunday 29th June, and the transition will close at 05:45am. Please ensure you have racked your bike before then.

Aid Stations

There will be aid stations located on the course that will be stocked with energy supplements, isotonic drinks and water.