Use the Vandersoft Half Marathon app to improve your stamina, endurance, and health to help you run a Half Marathon! Your body's strength will gradually increase over time with interval training. Over the next 20 weeks your running will be steadily improved. You will start with 1 minute jogging intervals in-between 1.5 minute walks. As you complete runs your body will be strengthened and the program will slowly become more challenging. Take your device with you on your runs! Listen to your fav