DH and I are discussing this issue. He feels our 9 yo should be able to ride aorund the block alone, while I think she needs a buddy. 9 just seems to young. Of Course the 9 yo is dying to do it... she wants to ride to the store and buy an apple. lol I do tend to be over protective, but I dont think at 9.... We do let her ride her bike alone to school, but I am following her in the car for the most part.... UGH I want to hold on forever! Thoughts??