I've been telling my daughters (9 and 11, IIRC) to "go ride their bikes" for a while now and today, they took me up on the offer.
First time out without supervision. A bit sad to say, that's not just first bike ride - it's almost[1] first time /out/ without parental/teacher/adult oversight.
Anyway, they went off and returned home 2 hours later having been to the PYO strawberry place and then to the beach. They'd cycled 6 ish miles and eaten their own bodyweight in strawberries (from the farm) and icecream (from the van at the beach).
As you can imagine, Mrs P was in agonies thinking of them dicing with traffic while they were suitably blase on their return.
[1] They have once or twice walked the 200 metres from Grandmother's to cousins'. Partly due to us living on a road that, though rural, can be a bit of rat run and is the only way to anywhere from home.