I sometimes race riders a lot older than me.

The female categories are spaced in multiple year age bands until you reach the age of 16. Male categories are in single age bands until you reach 11 years old, then they are in 2-year age bands until you reach the age of 19. See the table below:

20″ Wheel Classes Male 20″ Wheel Classes Female Cruiser (24″ Wheel) Classes
6 & Under – Male* 7 & Under – Female* 9 - 12 and Under*
7 yrs* 8 yrs* 13 - 14 yrs
8 yrs* 9 yrs* 15 - 16 + yrs
9 yrs* 10 yrs* 17 – 29 yrs
10 yrs* 11 yrs* 40 - 44 yrs
11 yrs* 12 yrs* 45 - 49 yrs
12 yrs* 13 yrs 50+ yrs
13 yrs 14 yrs  
14 yrs 15 yrs 13 - 16 Female
15 yrs 16 yrs 17 - 29 Female
16 yrs Championship Women (17+) 30+ Female
17 - 24 yrs    
Junior Men (17 – 18 yrs)    
25 - 29 yrs    
Masters (30+)    
Veteran (40+)    
Grand Veteran (50+)    
Elite Men (Money Class)    

Note: Riders in classes marked ‘*’ are not allowed to use clip type pedals