Betties360 Since 2005, Betties360 has provided under-served girls in the Portland community access to outdoor activities and life-skill training for free. Our mission is to inspire confidence, well-being and community in girls through action sports, outdoor adventure, and life-skill education. What’s a bettie? [bet-tee] n. plural: bet-ties. A girl in action sports; a girl skateboarder or snowboarder. See also: courage, strength, tenacity, adventure.