Shaftesbury Barnet Harrier Gilad Nachshen, 12, has risen to sixth in the UK under-13 800m rankings, recording 2:16.34 at the recent Watford Open Graded Meeting.
Nachshen, who has only recently resumed running after some months off with a leg injury, will represent Hertfordshire in the forthcoming Inter-counties Championships.
Three young athletes have set new PBs that place them in their age-group national rankings.
Lia Radus, 14, posted an 800m time of 2:20.6 in a British Milers Club race at Eltham. Joel Alexander, 14, cleared 1.50m in the high jump in the Youth Development League at Hornchurch. Rachel Hurley, 18, recorded 68.36 for 400m hurdles at Lee Valley.
Bini Bloom, 13, improved his 800m time to 2:24.72 at the recent Watford Open Graded Meeting.