Kirk Mahoney Website: https://www.spryfeet.com/ Posts by Kirk Mahoney: Big Sur Marathon Tour Videos Treadmill Running versus Track Running Elliptical Machine for Runner Training Hate Running? Try an Elliptical Machine Muscles Used When Running Marathoner Gratitude Daily Marathoner? Run your own training route! Marathon Negative Splits Visualization of Marathons and Half Marathons Marathon training causes heart damage? Posts navigation Previous Page « 1 … 36 37 38 … 45 Next Page »