Bee threw 10.41m to claim victory in the under-17 competition held at Carn Brea on Sunday.
She also came second in the javelin with 29.37m.
It was a good competition for City of Plymouth athletes.
Poppy Northcott won the under-11 girls’ 600m, 150m and long jump events.
She clocked 1:54.5 for the 600m, 22.7 seconds for the 150m and leaped 3.57m in the long jump.
Jed Hutchings won two events and came second in another in the boys’ 11 category.
He won the 600m in 1:49.5 and the 150m in PB time of 21.6 seconds, while coming second in the 75m in 11.00 seconds, which was another PB.
Mia O’Daly won the under-17 discus in 31.37m, she also came second in the 80m hurdles and third in the long jump.
Team-mate Noah Jones won the under-13 pole vault with 2.50m and also claimed a PB of 14.4 seconds to finish second in the 75m hurdles and also ran a PB of 31.3 in the 200m.
Full results can be found HERE.