Spring Marathon Training

Yesterday I started a new six-week marathon training program. The main goal is to increase my endurance for the last 10k of the marathon. The first run in this program was an easy 3 mile run to test my body. My right calf is a little sore from the Arizona race, but the rest of my body is pain-free.
Cross training and dieting are parts of my training, thus I need to manage my schedule a little better. Perhaps morning workouts twice a week will help, but I haven't committed to this yet!