Below is the link for this year’s mini marathon. The TCS Mini London Marathon is the official British Athletics 2.6km road championship that takes place over part of the full London marathon course, the day before the main race.
Runners must be aged between 11 and 17 years old and either live, go to school or have been born in the borough of Hillingdon.
Park runs are to be used to show times, so no trials required but entries must be completed by 4th September.
The Hillingdon Borough Sports & Activity Officer will then choose the team and contact individuals directly.
https://hillingdon.gov.uk/
All details can be found on the above link.