300m Track
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Last updated 27/11/2025
| Age Group | Rank | Athlete | Result | Date | Location |
|---|---|---|---|---|---|
| Boys - U15 | 1 | Aaron Duncan | 38.3 | 19/05/2018 | Lewes |
| Boys - U15 | 2 | Jack Palmer | 38.52 | 12/05/2019 | Crawley |
| Boys - U15 | 3 | Rhys Camis | 38.69 | 18/08/2012 | Bedford |
| Boys - U15 | 4 | Ben Goode | 38.8 | 12/07/2017 | Lewes |
| Boys - U15 | 5 | Edward Riseborough | 39.1 | 30/08/2024 | Brighton |
| Boys - U15 | 6 | Will Sutton | 39.3 | 24/05/2014 | Crawley |
| Boys - U15 | 7 | Adam Lawson | 40.56 | 13/05/2018 | Crawley |
| Boys - U15 | 8 | Sam Dunstall | 40.2 | 15/07/2017 | Lewes |
| Boys - U15 | 9 | Ben Walters | 40.7 | 10/07/2016 | Hastings |
| Boys - U15 | 10 | Louis Goodwin | 41.4 | 20/07/2019 | Lewes |
| Boys - U15 | 11 | Oli Bartle | 41.7 | 20/05/2017 | Withdean |
| Boys - U15 | 12 | Harvey Perry | 41.8 | 04/09/2021 | Brighton |
| Boys - U15 | 13 | Louis Williams | 42.0 | 03/07/2022 | Lewes |
| Boys - U15 | 14 | Luca Buckley McDonald | 42.1 | 19/05/2018 | Lewes |
| Boys - U15 | 15 | Owen Harvey | 42.2 | 13/07/2013 | Hastings |
| Boys - U15 | 16 | Jay Sinden | 42.4 | 13/07/2013 | Hastings |
| Boys - U15 | 17 | Stanley Hibberd | 43.6 | 03/06/2023 | Lewes |
| Boys - U15 | 18 | Jordan Bowman | 44.0 | 10/08/2013 | Eastbourne |
| Boys - U15 | 19 | Jacob Trotman | 44.02 | 13/05/2023 | Crawley |
| Boys - U15 | 20 | Jack Staples | 44.40 | 01/09/2023 | Brighton |
| Girls - U15 | 1 | Ava James | 43.73 | 21/05/2022 | Woodford |
| Girls - U15 | 2 | Rosie Kornevall | 43.79 | 04/07/2021 | Brighton |
| Girls - U15 | 3 | Chloe Kornevall | 43.8 | 28/06/2017 | Lewes |
| Girls - U15 | 4 | Millie Cable | 44.05 | 13/07/2011 | Crawley |
| Girls - U15 | 5 | Emilia Singer | 45.13 | 14/05/2023 | Crawley |
| Girls - U15 | 6 | Lizzie Keep | 46.0 | 05/06/2005 | Ilford |
| Girls - U15 | 7 | Eliza Barry | 45.8 | 30/08/2024 | Brighton |
| Girls - U15 | 8 | Florence Tuesday | 46.11 | 12/05/2024 | Crawley |
| Girls - U15 | 9 | Emilie Oakden | 46.3 | 05/06/2019 | Eastbourne |
| Girls - U15 | 10 | Sylvie Withycombe | 46.3 | 21/05/2014 | Lewes |
| Girls - U15 | 11 | Ella James | 46.8 | 03/09/2010 | Lewes |
| Girls - U15 | 12 | Eva Winton | 48.1 | 16/06/2023 | Brighton |
| Girls - U15 | 13 | Martha Cole | 48.2 | 01/09/2023 | Brighton |
| Girls - U15 | 14 | Jessica Lewis | 48.3 | 31/07/2005 | Eastbourne |
| Girls - U15 | 15 | Amelie Bedford | 48.6 | 21/04/2023 | Brighton |
| Girls - U15 | 16 | Zoe Wright | 48.65 | 18/09/2021 | Crawley |
| Girls - U15 | 17 | Jess Powell | 49.1 | 28/06/2019 | Brighton |
| Girls - U15 | 18 | Betty Barry | 49.2 | 25/04/2025 | Brighton |
| Girls - U15 | 19 | Ella Mundy | 49.2 | 21/05/2014 | Lewes |
| Girls - U15 | 20 | Lizzie Moisan | 49.4 | 18/07/2015 | Lewes |
| Girls - U15 | 21 | Isabella Copp | 49.7 | 18/05/2019 | Lewes |
| Women - U17 | 1 | Rosie Kornevall | 41.20 | 30/06/2023 | Birmingham |
| Women - U17 | 2 | Chloe Kornevall | 41.28 | 26/08/2019 | Crawley |
| Women - U17 | 3 | India Sommerville | 43.26 | 28/05/2023 | Mile End |
| Women - U17 | 4 | Joscelin Lowden | 43.3 | 27/06/2004 | Lewes |
| Women - U17 | 5 | Livvy Connor | 43.34 | 17/07/2013 | Crawley |
| Women - U17 | 6 | Emilia Singer | 43.84 | 18/06/2024 | Worthing |
| Women - U17 | 7 | Samantha Eatwell | 44.1 | 01/08/2004 | Hemel Hempstead |
| Women - U17 | 8 | Ava James | 44.14 | 30/07/2023 | Dartford |
| Women - U17 | 9 | Jessica Lewis | 44.4 | 20/05/2007 | Canterbury |
| Women - U17 | 10 | Rosalind Shuttleworth | 44.9 | 31/03/1990 | Brighton |
| Women - U17 | 11 | Joscelin Lowden | 45.1 | 04/05/2003 | Lewes |
| Women - U17 | 12 | Sylvie Withycombe | 45.1 | 23/05/2015 | Crawley |
| Women - U17 | 13 | Rebecca Hawkes | 46.26 | 14/05/2004 | Crawley |
| Women - U17 | 14 | Emily Woodall | 46.4 | 09/05/2004 | Lewes |
| Women - U17 | 15 | Eloise Smetham | 46.49 | 06/04/2015 | Crawley |
| Women - U17 | 16 | Esme Stephenson | 47.27 | 30/06/2024 | Carshalton |
| Women - U17 | 17 | Hannah McDonald | 48.2 | 08/05/2011 | Lewes |
| Women - U17 | 18 | Faith Daughtery | 48.2 | 08/05/2011 | Lewes |
| Women - U17 | 19 | ChiChi Onuora | 48.6 | 31/07/2005 | Eastbourne |
| Women - U17 | 20 | Ella Mundy | 49.2 | 18/04/2015 | Southampton |
| Women - U20 | 1 | Chloe Kornevall | 42.25 | 10/07/2022 | Gillingham |