Chloe Hannam (16) claimed six golds and four bronze medals in the East Region Youth Championships in Luton.
The City of Peterborough swimmer, who lives in Spalding, swam seven individual events, making it into seven finals.
On the first day, Chloe reeled off victories in the 400 individual medley, 200 freestyle and the 200 backstroke, bettering her PB in the latter by eight seconds.
Day two saw Chloe swim her way to gold in the 800 freestyle in a time of 9.03 minutes.
Just 10 minutes later, she swam the final of the 200 individual medley, taking another gold.
She finished the weekend with an unexpected bronze in the 100 freestyle.
Chloe also swam as part of the City of Peterborough relay team in three events: 4x100m free, 4x200m free and 4 x 100m individual medley, notching up a further three bronzes.
In the 4x100m freestyle she recorded a PB of 1.33.
nShe also won six gold medals at the Crawley Open Meet. Chloe blew away the competition by winning the 200m and 400 individual medleys, the 400m and 800m freestyle and the 100m and 200m backstroke.
The 200m backstroke was a PB, putting her in the top five in the national age-group rankings and inside the qualification time for the British Championships in June.