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Siddhartha Ghosh (b. 21 February 1975) from Kolkata is the first person to complete all the Six World Marathons in one calendar year during 2013. He is also the first recipient of the Six Star World Marathon certificate and has received the Six Star World Marathon certificate five times consecutively from 2012-2016. The World Marathon Majors consists of six races annually across cities and are accredited by the Interational Association of Athletics Federations (IAAF).