Ds is just 20 months and as soon as he could walk (at 15 months) has never been one to stay nearby when we're out, say, in a park. He just picks a direction (usually towards something potentially dangerous) and runs off in it. I've tried staying where I am, saying 'bye!', pretending to walk off in another direction, etc. He doesn't really care, and will happily wave 'bye' back before continuing on his way into the distance. Inevitably I end up having to peg it after him before he gets to the pond/huge barking dog/gate to the road... which obviously he thinks is hilarious and a jolly good game. I do want him to have plenty of freedom and explore but, well, a bit closer to me! Oddly he is happy to hold my hand along the road or be in the buggy, but there's no happy medium where he stays in my general vicinity.
Or is it 'just a phase'...? What should I be doing?! Other children his age seem to want to keep their parents in sight.