It is recommended that you first build a base of at least 20 miles of cardiovascular endurance training before attempting to start this half marathon training program. Without a sufficient milage base to start this program, you increase your risk of injury.

This 12-week endurance training program is your advancement in the fun world of competitive running by participating a in the half marathon race. Now you really start to increase the milage and build upon your previous endurance training. Durring this program you'll use farleks, thresholds, intervals, hills and strides speed and endurance exercises in your cardiovascular endurance program to get you ready for the half marathon.

If you haven't already, you should start a runners training log. It's a great place to record your race times so you can see the steady improvements that you are making making.