You are in the same boat as Sarls. (She is not as old
) Sara has had to race with younger and mixed fields to be able to race as often as she wants to. There will be some races that will have your age group with enough riders to offer separate fields. Your State Senior Games, State Master's Championships and the Huntsman's Games are examples of those races.
Good luck and please feel free to become part of this community as you journey to racing.