Josie Czura stormed to the South of England Inter Counties Cross Country title with a superb display in Bedfordshire.
The City of Portsmouth starlet won the under-13 girls crown and led Hampshire to second place in the team race.
Czura timed her finishing burst to perfection, to win in 11mins 04secs.
City of Portsmouth coach Vince Stamp said: ‘It was a high-class field.
‘Josie ran a really good tactical race.
‘She reached the halfway point in second place.
‘When she made her move she struck hard, pulling away over the last 200m-300m.’
Hampshire were edged into second spot in the team race, finishing level with Surrey on 39 points but missing out due to the position of their fourth scorer.
City of Portsmouth trio Olivia Wiseman, Anya Pigden and Bo Sansom also performed well in the race.
Wiseman was competing for Sussex and was their third scorer, in 28th place, with a time of 12.09.
That was ahead of Hampshire duo Pigden, who recorded 12.15 in 35th, and Sansom, who finished 37th in 12.18.
Stamp said: ‘Olivia had a cracker of a race. She’s only just turned 11 so is bottom of the age group.
‘She beat Anya, who has been really brilliant all summer and winter.
‘It was funny because Olivia was in the Sussex tent but warmed up with our group before the race.
‘Bo is another who is only 11 and had an outstanding run.’
In the under-13 boys, City’s Lachlan Wellington finished fourth in 10.37 and helped Hampshire to team fourth.
His club-mates Harry Moore (36th in 11.20) and Adam Kimber (64th in 11.39) also ran well.
Elizabeth Hedley came 21st in the under-15 girls, ahead of Maisie Grice in 60th.
Ellie Czura, Josie’s older sister, was 52nd in the under-17 girls.
Matt Smith finished 57th in the under-17 men’s race, with a time of 17.16.