Guys, it's not against the rules:
1H3. Mixing of Classes. An organizer may offer races for combined classifications and categories but the categories in a given race must be the same for all age groups. However, youth races may include only one-day licensees younger than 10 and possibly juniors as specified in Rule 1H1. All riders shall race the same distance unless there is a distance handicapped start for separate groupings of riders.