How far is the Altra Kielder 10K?

The Altra Kielder 10K is one distance: 10K (6.2 miles).

Is the Altra Kielder 10K course marked?

Yes, the course is marked. Navigation skills are not required.

What are the cut-offs for the Altra Kielder 10K?

Overall time limits — 10K: 2h 30m.

Events of the North Altra Kielder 10K

Kielder Waterside, Kielder Water & Forest ParkNo date announced yet

Saturday afternoon 10K round the Bull Crag peninsula at Kielder Water

10K

6 miles

2h 30m cut-off

15:00/km to make it

forestreservoirMarked course

Nobody has reviewed this one yet

No reviews of the Altra Kielder 10K, and nothing on what people wore. Both are things no organiser publishes and every runner wants before they enter — how it actually went, and what was on your feet.

Ran it? Write the first review

Running it soon? Connect Strava and we will ask you about it the day you finish, so you do not have to remember to come back.

The course

2h 30m cut-off, which needs 15:00/km

What you’re in for

A single loop of the Bull Crag peninsula on the Lakeside Way, starting from Kielder Waterside. It is off-road on good forest and lakeside paths, with the same short undulations that feature in the marathon, and the views across the reservoir are the main attraction. It runs on the Saturday afternoon of the Kielder Marathon weekend alongside the gravel duathlon, with free park-and-ride shuttles from 10:30. Entrants need to be over 15, and the organiser asks that runners be confident of finishing inside 2.5 hours.

Partner · affiliate policy

Train for it: routes near the start

Routes starting within 20 km of Kielder Waterside, Kielder Water & Forest Park, nearest first. Each one has a free GPX file and a TRP grade, so you can rehearse the ground before race day.

VERY HARD

Kielder Water Lakeside Loop

40.0km · 337m climb · Loop · 4.7km away

It's one of the few places in the country where you can run 40km without a single significant hill, entirely on good surface, through forest that feels genuinely remote from anywhere else in England.

All Northumberland routes →

How to enter

No date announced for the next running yet. Events of the North’s site ↗ is where it will show up first.

Common questions

: The Altra Kielder 10K is one distance: 10K (6.2 miles).
: No course file for the Altra Kielder 10K yet, so there's no measured climb here. When Events of the North publish one, this fills in.
: Not graded yet. A TRP grade is worked out from distance and climb measured off the course file, and there isn't one for the Altra Kielder 10K yet.
: Yes, the course is marked. Navigation skills are not required.
: We don't hold a compulsory kit list for the Altra Kielder 10K. Events of the North confirm mandatory kit in their race information, usually in the final instructions.
: Overall time limits — 10K: 2h 30m.
: We don't hold a checkpoint list for the Altra Kielder 10K. What's on the table varies a lot between races, so check the Events of the North race information rather than turning up expecting food.
: Not yet — we don't hold a course file for the Altra Kielder 10K. Some organisers only send the GPX to entrants. If we get one, it goes up free, with no sign-up.
: No date announced. When Events of the North confirm the next Altra Kielder 10K, it appears here and on the race calendar.

Past runnings

2026Sat, 3 Oct 2026