The Suja Rock 'n' Roll San Diego Half Marathon is their only tune-up race before Rio.
A cap of 2,000 competitors will be enforced in 2016 — down more than 200 from the London Games.
Instead, he may try to make his fourth Olympic team.
Japan hopes to show the world that it can recover from the devastating tsunami earlier this year.
The network is partnering with Comcast.
The Brazilian megalopolis will be the first South American city to host the Games. Considered a co-favorite ahead of Friday’s