Luke Puskedra runs back to Chicago for a good cause

CHICAGO (FOX 32 NEWS) - Luke Puskedra is currently the fastest American marathoner.

Puskedra notched an incredible time of 2:10:24 in last year's Chicago race, now he's back for a good cause.

An alternate for the upcoming Rio Olympics, Puskedra joins Good Day Chicago to talk about fundraising, running tips and Zika concerns.