The NCAA 10,000m-record holder will try his hand at 13.1 miles.
Martin Mathathi broke a six-year-old course record.
It was a repeat victory for Mathew Kisorio and a redemption for Kim Smith.
She's been sidelined for ten months.
He's doing it for charity.
More big names join an already-stacked field.
Tribute bib numbers are to be worn by loved ones running for Danielle Kousoulis and Bill Fallon.
The race will include the Anthem Corporate Challenge competition.
He had told his wife he was volunteering in the races.
She finished second in her age group.