The national park will release a new draft of its backcountry management plan this fall to deal with overcrowding issues.
The last time the IAAF held a world championship in the U.S. was 1992.
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.
A new running shop is about to open in the running mecca of Boulder, Colo.
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