Girls 14 to 21 are part of scouting in the Venture program that is co-ed. They are very active and able to to more "high adventure" scouting than regular troops. They can shoot pistols and navigate higher class rapids in white water.
My oldest daughter is thinking of doing this next year. She's in her last year of Cadette Girl Scouts, and wants to finish her Silver Award project, but she's been griping for a couple of years that the other girls don't want to do much outdoors stuff.