Abebe Bikila won the 1960 Olympic Marathon Barefooted in 2:15:16 and came back four years later to win again breaking the World Record in 2:12:11.
54 years later, wearing the controversial spring loaded Nike Vaporflys, Eliud Kipchoge breaks the World Record running 2:01:39. 10 mins 32 seconds faster than Bikila's time but separated by a huge chasm in terms of the both the available technology, and knowledge in terms of nutrition and training methodology of the time.
Splitting the time difference between Bikila's landmark first barefoot Olympic triumph and Kipchoge's epic World Record, if the two had been born at the same time and reach their peaks in the late 1980s, who would win, wearing what footwear, and in what time?