The question was asked in the "Bria" thread (and possibly the "Brianna" thread as well): What girl prodigies went on to have successful careers?
Mary Decker always gets a mention, but I'm curious if there are others.
I'll throw in Carrie Tollefson. Won the MN State H.S. (small school) CC championship as an 8th grader. Went on to win it 4 more times. Solid career at Villanova. Continues to improve.