My 13-yr-old wants to do cycling as his sports section for his DOE. I was supportive of this until I realised he intends to go for long rides (25 - 30 miles) entirely alone. I really don't think it is safe for him to ride that far alone, as if he gets into difficulties there is no-one to help him. He cycles two miles to school and back every day and doesn't see how this is different. I have pointed out that is is a) shorter b) a familiar route c) if he doesn't arrive at school they will call me and d) he goes along relatively busy (but slowish) roads with lots of pedestrians and cars, so if he fell off there are lots of people around to help. He thinks I am being over-protective but I feel it would actually be hugely irresponsible to let him to bike rides this long completely on his own. He has fallen off his bike twice in the last year. AIBU?