The former professional cyclist gives up after his first lap of four around the track.
In a brief email sent out over the weekend and posted on their Facebook page, AdventureCORPS—organizers of the Badwater 135
It's the first time in 12 years distance runners have swept the awards.
Sarah Kiptoo of Kenya also repeats as women's champion.
Donna Gookin, David Pain recognized for their contributions to running.
The 32-year-old captured his fifth Rock 'n' Roll Marathon Series victory on Sunday night.
Rock 'n' Roll Las Vegas weekend starts with a 5K for the first time.
Peter Kline will run Rock 'n' Roll Las Vegas to round out a 100-mile day.
Death Valley National Park officials ruled there can no longer be daytime races in the summer there.
The 32-year-old is aiming for his fifth Rock 'n' Roll Marathon Series victory of 2014 on Sunday night at Rock 'n' Roll Las Vegas.