Here is the link to further details of the event and the Entry page: https://data.opentrack.run/en-gb/x/2023/GBR/berkshirexc/

To be eligible to compete, an athlete must have been born in Berkshire, or have had 9 months’ continuous bona fide residency in the county prior to the date of competition (December 17th 2023), or have served in a unit of HM Forces stationed in Berkshire for 9 months immediately prior to the competition. A student does not acquire a residential qualification by residence in Berkshire in school/college term time only.