Shaftesbury Barnet under-13 athletes David Stone and Lia Radus were in sparkling form at the Eastern Young Athletes League final in Stevenage.
Stone romped to victory in the 1,500m in a time of 4:51.3, while Radus, 11, was equally impressive, winning the girls 1,500m in 5:11.0.
In the under-15 division at the same meeting, teammate Jessica Hurley placed second in the 800m in 2:31.0 and third in the 300m in 45.3.
Radus had shown in recent weeks that she is one of the country’s fastest young middle-distance runners by placing fourth in the Oak Hill Park run 5K in 19:39.
Stone takes part in the Southern Road relay 3,000m race this weekend.
Anna Barnett, 14, achieved a personal best of 30.35m in winning the Blackheath & Bromley hammer championship.
Shaftesbury Barnet Harrier George Grant, 15, scaled a new personal best height of 3.35 m when placing fourth in the UK Youth Development League Final at Birmingham.
Highgate Harrier Ben Hatch, 15, reduced his 1500m best to 4:35.11 in winning his heat at the Watford Open Meeting.
Nathaniel Lane, 37, completed the Cardiff 10K road race in 32:18, his fastest time over the distance since 2011.