Maczugowski and Dyer both won South West Indoor Championships titles in Cardiff, while Dingley impressed with a personal best at the Lee Valley December Open.
Maczugowski claimed both the under-17 boys’ 200m and 400m South West gold medals in Wales. He clocked 23.31 seconds for the 200m and 53.87 for the 400m at the first meeting of the three-round championships, which are incorporated within Welsh Junior Open competitions.
Dyer secured the under-15 girls’ regional indoor 300m crown with a 45.85 second run. She also leaped 4.24m in the long jump.
He had two under-17 races over the 60m hurdles. In the first he clocked 8.56 seconds before running a new PB of 8.51 on his way to winning his heat in the second round.