Amy Cragg

On October 7, elites will head to the Windy City for the 2018 Chicago Marathon. Who will win, who will podium and who's story will cause a buzz on race day?

The Suja Rock 'n' Roll San Diego Half Marathon is their only tune-up race before Rio.

Check out Emily Polachek's author page.

The 31-year-old comes into this year's Boston Marathon riding a wave of momentum after scratching from last year's race.