No "Athena" divisions
If you offer Clydesdale divisions in your race (runners compete in weight divisions instead of age divisions), don't create an "Athena" division for women.
It's discriminatory and patronizing. It's no different than referring to "men and ladies." Use terms that are equal.
You can have "Adonis and Athena" divisions or "Male and Female."
Calling larger women "Athena" is not flattering and won't get more women to compete.