Majority of humans are capable of doing a marathon in under 4 hrs, just that they don't believe they can. Start with wanting to. Soon you will.
This is a sub 4 hr full marathon training plan targeting New Delhi Marathon (NDM) which is on 26th Feb. This plan is really for those who’ve managed to do half marathon in last couple of months in under 2 hours and full marathon distance in last few weeks in sub 4 hours 15 min.