She was caught attending the ancient Olympic Games disguised as a male trainer in 388 BCE.
[4] Kallipateira was a widow at the time of her arrest at Olympia, which she was attending in support of her own son Peisirodos.
She, being a widow, disguised herself exactly like a gymnastic trainer, and brought her son to compete at Olympia.
Peisirodus, for so her son was called, was victorious, and Kallipateira, as she was jumping over the enclosure in which they keep the trainers shut up, bared her person.
So her sex was discovered, but they let her go unpunished out of respect for her father, her brothers and her son, all of whom had been victorious at Olympia.