| Under-13 Girls 100 Metres HEAT 1 (Kingsmeadow Stadium, 11 May) | 1 | | Amelia Montegnani | (Herne Hill Harriers) | 13.42 | -1.6 | | | | 2 | | Charlotte Coe | (Walton AC) | 13.82 | -1.6 | | | | 3 | | Amy Greenberg | (Guildford & Godalming AC / (Gldfd HS)) | 14.23 | -1.6 | | | | 4 | | Magali Franka | (Herne Hill Harriers) | 14.26 | -1.6 | | | | 5 | | Alexandra Biggs | (Epsom & Ewell Harriers) | 15.10 | -1.6 | | | | 6 | | Maia Jones | (Kingston AC & Polytechnic Harriers) | 15.71 | -1.6 | | | | 7 | | Natalie Evernden | (Kingston AC & Polytechnic Harriers) | 15.96 | -1.6 | | | |
| | | Under-13 Girls 100 Metres HEAT 2 (Kingsmeadow Stadium, 11 May) | 1 | | Caroline Stakalls | (Sutton & District AC) | 14.36 | -1.0 | | | | 2 | | Olivia Sykes | (Richmond & Twickenham AC) | 14.56 | -1.0 | | | | 3 | | Jessica Lakin | (Walton AC) | 14.60 | -1.0 | | | | 4 | | Holly Mouland | (Holland Sports AC) | 14.92 | -1.0 | | | | 5 | | Philippa Jones | (Kingston AC & Polytechnic Harriers) | 15.23 | -1.0 | | | | 6 | | Harriet Lester | (Kingston AC & Polytechnic Harriers) | 15.39 | -1.0 | | | | 7 | | Katie Perks | (Epsom & Ewell Harriers) | 16.05 | -1.0 | | | |
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