8km Run/20Km Cycle/7Km Run

Sunday 9th January 2022

Entries to open late September/October. Further details & entry links will be available nearer the time.

The event is part of a fantastic weekend of trail races with the Kielder Winter 10 mile & Kielder Dark Skies 10k Night Race scheduled for the Saturday.

A superb off road event based in Kielder Forest Park. This event is ideal whether you are a seasoned racer or new to duathlons aiming to compete in your first off road event. With stunning scenery & an extensive network of forest tracks and purpose built bike trails, this is a spectacular location for trail running and mountain biking.

The event is open to individuals or relay pairs.

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Date: Sunday 9th January 2022   Start Time: 10.30am

Venue: The event is to be based at Kielder Castle Forest Park Centre, Kielder, Northumberland, NE48 1ER. This is ideal for families & supporters.

As Kielder Castle is currently undergoing refurbishment we may need to relocate the event start/finish area. There are a number of alternative options adjacent to the castle. Updates will be posted nearer the time.

Registration: Between 8.30am and 10am on the Sunday. Event numbers will be issued at registration. ​Briefing notes will be available approx. five days prior to the event. Nothing will be posted out.

Relay Category for Pairs: One person cycles, the other runs. This is open for male, female & mixed teams - ideal for specialist runners/cyclists or beginners who would like to test themselves over a single discipline.

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Entry Fee: Individual Entry: £35.00     Relay Entry:  £45.00  Minimum entry age 17 years old.

If the event is cancelled due to Covid regulations, participants will be offered either:
  -A full refund minus the 6% online entry fee
  -Automatic transfer to 2022
  -Transfer your entry to another selected High Terrain event of similar value. This can be in either 2021 or 2022.

Parking:  Event parking is at Kielder Castle Visitor Centre car park (pay & display) which is just a few minutes’ walk to the castle.


What's Included in Your Entry:

  • All event organisation

  •  Experienced safety team cover during the race, including qualified & experienced personnel at various locations

  • Qualified medical support

  • Fully marked routes & transition area

  • Online Registration, electronic chip timing, customised race number

  • Refreshments at finish,

  • A great event venue & contribution to Kielder Water & Forest Park (This helps towards trail maintenance).

For refunds, deferrals and cancellation policies please consult our T&Cs page

Participant Feedback


"Excellent event with a really friendly crowd of organisers, marshals spectators and competitors! Thanks to the lovely people at the end who fed me when I ran out of fuel!! Well done to all the prize winners!! Amazing efforts!!! " Caroline Cunningham

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"Great event and course, thank you. An excellent well organised event, great crowed of people as well. Thanks"  Adam Hogarth

"Just wanted to say thank you for a brilliant event on Sunday in Kielder " Andy McClure.


"Thanks to all the marshals and the organisers! Great event and a great venue! "  David Poole

Rachael McDougal Great event and course, thank you. thanks to all organisers and marshalls


Course: Starting and finishing at Kielder Castle, the event consists of a 8km trail run followed by a 23km mountain bike, incorporating the blue graded bike trail, finishing with a final 7km trail run. Due to the time of year both runs will be staying fairly low on a good mix of forest tracks and woodland trails. The run routes are not too hilly or steep. The courses will be fully marked, therefore no navigational skills are needed. 


The mountain bike section incorporates the Blue graded Osprey trail, which is a superb flowing trail and gives you some of the great vistas Kielder has to offer.  It is an undulating route with few technical aspects such as drop offs or rocks, so it is suitable for the less experienced riders and those not wanting a too tough and technical route.

The main section is a mixture of flowing singletrack linked by forest roads.

Cyclo cross bikes are permitted although the terrain is more suited to MTB.

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Run 1: Starting out from Kielder castle, the initial loop heads out along the forest road before picking up a short single track section towards Ravenshill Moor. The trail climbs gradually with superb views across the whole valley. A fast  descent leads to the secluded Archer Cleugh burn, then from here return back to T1 at Kielder Castle.

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Cycle: Exiting T1 at Kielder Castle the bike course heads up the Forest Drive to the first of several sections of sweeping single track as it turns along Kielder Burn and climbs into the forest. Soon after Castle Hill is the start of a singletrack climb leading all the way to the top of Hill 361. This is the high point of the bike course & a good point to catch your breath and take in the views of Deadwater Fell and beyond into Scotland.

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A fast descent follows with plenty of switchbacks & berms to get the adrenalin pumping. Following some superb winding sections through the forest, there's a short climb from Plashets Burn. This is soon followed by a flowing singletrack descent amidst some beautiful Scots Pine to meet the Lakeside Way (North side).

This is an undulating section for a few km's along the multiuser trail offering great views across Kielder Water. Reaching Bakethin Reservoir (section where Run 2 joins), the route then climbs steadily back towards Castle Hill before finishing with an exhilarating singletrack descent leading back to T2 at Kielder Castle.

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Run 2: Exit the castle gates & turn left descending through the village to cross the road & join the 'Old Wood Road' along the banks of the river North Tyne. The route then crosses under & then over Kielder Viaduct joining the Lakeside Way. Enjoy the views across Bakethin Reservoir Nature Reserve, eventually reaching the section where the bike route returned. Following the same climb (as on the bike) to Castle Hill, this final tough section is rewarded with a great descent following the Duchess Trail back to the castle & a well deserved finish.

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