In Exercise: P90X while Training for First Marathon?: Marathon Race Training

26.2 #1 Des Moines 07 4:19:00 #2 Chicago 08 4:00:42 #3 Chicago 09 3:43:01 #4 Chicago 10 3:36:51 20k #1 07 1:54 #2 08 1:48 #3 09 1:42 #4 10 1:36 #5 11 1:30 I am following P90X and in my opinion, training for a marathon and following P90X is too aggressive in your training. P90X is not ideal for marathon preparation.Running is ideal for marathon preparation.P90X is a fine program to improve your gen ...Exercise