I’m a middle distance runner – putting in about 20 to 30 miles a week, primarily on the treadmill.

Each time I’m running, about when I hit 4 miles or so my socks bunch up at the balls of my feet – or at least the one I pronate most on – the left foot, and it’s uncomfortable.

I have good shoes that fix my stride (stability so I don’t pronate so much), properly fit my arch and my narrow foot. I’ve invested in a variety of socks – the Balegas seem best… but I still have this problem. Any ideas? Ever heard of this before?