This California International Marathon training plan (up to 12 weeks long) includes my tried and true, scientifically-based and proven marathon workout sequence to help athletes running CIM. You'll improve your endurance with progressing long runs. You'll boost your stamina and speed with my marathon specialty workouts and I'll have you perform several goal pace workouts so you really dial in goal pace. And speaking of goal pace, this plan includes several of the predictor workouts I use with ...