If you like the idea of training for a run at a higher intensity from day one consider the Run4 Bionic Runner. With it you can run without the relentless pounding of your feet on the pavement hence reducing the risk of injury. It also allows you to continue training for that marathon even if you have a minor injury or recovering from a serious one. At the very least the Bionic Runner can improve your fitness, strength, and endurance so you can focus on stride efficiency and running economy when it's time to actually run. As a bonus, the Bionic Runner trains you to run with a mid-foot running style, which according to some experts is the correct way to run.