Man cycles from China on a rickshaw for London 2012
26 July 2012 Last updated at 09:37 BST
In two years Chen Guanming has travelled thousands of kilometres through 16 countries, overcoming floods, war zones, mountain passes and temperatures of -30C.
His aim, he said, was to "spread the Olympic spirit".
BBC London reporter Matthew Morris went to London's Chinatown to meet the remarkable Mr Chen and John Beeston, who encountered him when he finally arrived in the 2012 host city.
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