Atalanta was an Arcadian (or Boeotian) princess who was abandoned in the wild by her father who had wanted a son instead. There she was cared for by a she-bear, until hunters found and raised her. Atalanta was a wild and happy child, who learned to fight and hunt like her bear-mother.
In adulthood, Atalanta sailed with the Argonauts - the only female among them besides non-Argonaut Medea - and joined them in their numerous (mis)adventures. At the funeral games for Pelias, she wrestled and defeated Peleus, father of Achilles.
Atalanta joined the hunt for the fearsome Calydonian Boar despite the fact that some of the men were furious that a woman was daring to join them. She became the first to draw blood from the boar, and when the hero Meleager managed to kill the boar he presented the head and/or skin to Atalanta.
After this hunt, she was reunited with her father who now wanted to marry her off. Atalanta, who had taken a vow of virginity to Artemis, agreed to marry only on her own terms: a footrace. If he won, she would marry him. If he lost, she would chase him down and kill him with her own bow. Many young men died trying, until Hippomenes asked Aphrodite for her assistance to win. The goddess gave him irresistible golden apples to drop as they ran, and Atalanta couldn’t help but chase after them.
Together they had a son Parthenopaios, who was one of the Seven Against Thebes (although some call his father Ares). Their story ends when they are both turned into lions as punishment by either Zeus/Rhea (for making love in one of his temples) or Aphrodite (because they did not give her proper honour) or Artemis (for breaking her virginity vow).