The Cancer Research UK event will take place at Exhibition Park, Newcastle, starting at 11am.

The fourth Castle challenge had been scheduled for Alnwick on Sunday, September 7 this year but the flash floods which hit Northumberland that weekend forced race organisers to pull the plug on the run.

And flood damage to the course – which started and finished in The Pastures and took runners through Hulne Park – meant that a new venue had to be found to stage the race.

Sunday's course is flat and almost entirely made-up of good quality paths with one fairly short stretch of grass. The run starts and finishes in Exhibition Park, with most of the course set-out around the adjoining town moor.

More than 900 runners had signed up to run the Alnwick event and all were automatically given a place in the run. Entry is now closed for the event.

Participants are encouraged to arrive an hour before the run and there will be a stretch and warm-up at around 10.30am.

For car parking and map details, visit www.cancerresearchuk.org/10k/venues/exhibition_park08/