Here’s an oldie but a goodie. Desi Linden, when she was still Desi Davila, training for the 2012 Olympic trials by running 5 x 2 mile repeats at 5:15 per mile, in the winter, in Detroit. Check out her form. Its damn near perfect:

Maybe I’ll try this work out. Though for me, the pace would be about three minutes faster per mile.