What is the best way to train for a marathon? ADVERTISEMENT 880 viewsMarch 25, 2013 0 kiley March 25, 2013 0 Comments Inside/Outside cardio? circuit training? Strength and cardio? Interval training? 10 Answers ActiveVotedNewestOldest 0 Lori0 Posted 0 Comments I would say to start with doing shorter races – work your way up from 5k to 10k to half marathon. It will give the person experience and confidence. In terms of how to train I would say do all that you mention with a higher focus on outdoor running. You are viewing 1 out of 10 answers, click here to view all answers. Register or Login