Could always do it like I call "filing a flight plan". My parents made me do that when I would go out of town riding as a teen(and I did a lot). As long as I had an approximate route/timeplan they would generally let me go solo. At least then they had a checkpoint to know when to be concerned. That said, the margins were rather lax. My friend/riding partner at the same time had very stringent flight plan requirements with his parents. Later on I got my Amateur Radio(ham) license, for which my dad and sis were also licensed and that helped a lot on the accessibility. This was before cell phones had reached promincence in that area but the radio was more effective within the radius anyhow. There is no min age for that
