I wore the racing flats for all road runs, including marathons, for years. Now I wear NB Minimus for both roads and trails. But the principle is the same. It's

I wore the racing flats for all road runs, including marathons, for years. Now I wear NB Minimus for both roads and trails. But the principle is the same. It's flat, flexible, light shoe. The racing flats I mentioned are designed for racing, definitely. But the idea is that you wear them for all road runs, fast or slow, as a means to changing your running form. You can probably get Wave Universe on Amazon.