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MONZA, ITALY - MAY 06: (C) Eliud Kipchoge runs during the Nike Breaking2: Sub-Two Marathon Attempt at Autodromo di Monza on May 6, 2017 in Monza, Italy. (Photo by Pier Marco Tacca/Getty Images)

MONZA, ITALY - MAY 06:  (C) Eliud Kipchoge runs during the Nike Breaking2: Sub-Two Marathon Attempt at Autodromo di Monza on May 6, 2017 in Monza, Italy.  (Photo by Pier Marco Tacca/Getty Images)

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MONZA, ITALY - MAY 06: (C) Eliud Kipchoge runs during the Nike Breaking2: Sub-Two Marathon Attempt at Autodromo di Monza on May 6, 2017 in Monza, Italy. (Photo by Pier Marco Tacca/Getty Images)

MONZA, ITALY - MAY 06:  (C) Eliud Kipchoge runs during the Nike Breaking2: Sub-Two Marathon Attempt at Autodromo di Monza on May 6, 2017 in Monza, Italy.  (Photo by Pier Marco Tacca/Getty Images)

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MONZA, ITALY - MAY 06: Eliud Kipchoge at the finish line of the Nike Breaking2: Sub-Two Marathon Attempt at Autodromo di Monza on May 6, 2017 in Monza, Italy. (Photo by Pier Marco Tacca/Getty Images)

MONZA, ITALY - MAY 06:  Eliud Kipchoge at the finish line of the Nike Breaking2: Sub-Two Marathon Attempt at Autodromo di Monza on May 6, 2017 in Monza, Italy.  (Photo by Pier Marco Tacca/Getty Images)

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MONZA, ITALY - MAY 06: (L) Eliud Kipchoge runs during the Nike Breaking2: Sub-Two Marathon Attempt at Autodromo di Monza on May 6, 2017 in Monza, Italy. (Photo by Pier Marco Tacca/Getty Images)

MONZA, ITALY - MAY 06:  (L) Eliud Kipchoge runs during the Nike Breaking2: Sub-Two Marathon Attempt at Autodromo di Monza on May 6, 2017 in Monza, Italy.  (Photo by Pier Marco Tacca/Getty Images)

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MONZA, ITALY - MAY 06: (C) Eliud Kipchoge runs on the last lap during the Nike Breaking2: Sub-Two Marathon Attempt at Autodromo di Monza on May 6, 2017 in Monza, Italy. (Photo by Pier Marco Tacca/Getty Images)

MONZA, ITALY - MAY 06:  (C) Eliud Kipchoge runs on the last lap during the Nike Breaking2: Sub-Two Marathon Attempt at Autodromo di Monza on May 6, 2017 in Monza, Italy.  (Photo by Pier Marco Tacca/Getty Images)