Some of the most memorable tours I have ever done were 2 day wild camping trips. Depending on the destination, most of a day's ride could be 80 miles or 25 miles. Definitely a good time, and the only option when you have to work all week. I commend you for encouraging your son's interest in cycling. I have two sons, one 2 and the other 10. The 2 year old LOVES our daytrips through the woods. The 10 year old grumbles a bit, but still can knock out a 30 mile day in the mountains and usually ends up having fun. One of the best forms of quality family time there is, I think.