Thank you, and congratulations on taking the half-marathon plunge. You are getting a late start with training, but all is not lost. Here’s a good training plan from Runner’s World and another from Hal Higdon. Count back from race day and jump in feet first—start tonight! And don’t worry about hitting a plateau or burning out; it takes much longer than a few months of heavy running to get sick of the sport. Still, any good plan encourages cross-training; try to do something active (that does not involve pounding pavement) at least twice a week. For other running tips and inspiration, click here. Best of luck!