The 27-year-old is targeting several races leading up to the 2016 Olympic marathon.
The 18-year-old American will kick off the meet, held in Eugene, Ore., with Thursday’s 3000m.
This year's 135-mile Badwater race is being run on a different course because of permit issues.
The 2014 Boston Marathon champion will take on a variety of duties in his new role.
The relay took the group a little more than 28 hours to complete.
Over 20,000 entrants took to the streets of The Windy City on Sunday morning.
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The loaded men's race promises to be a speedy affair on September 21.
Meb Keflezighi and his historic Boston Marathon victory are nowhere to be found in the list of ESPY candidates.
The British runner has also been named to his country's European Championships squad.