and age groups go in 5 year blocks
for adults it goes Group D - 20-24, then E - 20-24, F - 25-29 etc. below D are the junior categories with A - 15/16. and then Tristar cats below them - youngest you can race is 8.
when I get the time, I'm going to try to revive the Clydesdale classes - which are ranked by age AND weight so us large ones can compare against other large ones rather than just against the skinny whippets like CD.....
Edited: 11/02/2011 at 15:18