Runners from all around are gathering to fill Chicago streets not once, but twice in a matter of months.
Both of the city's big upcoming races have sold out for the second year in a row, meaning thousands will kick off the unofficial start to outdoor running season in style with this weekend's Bank of America Shamrock Shuffle.
Both the Shuffle and the Bank of America Chicago 13.1 have officially sold out in registration.
But that doesn't mean all options for running the iconic city events are gone.
If the registration slots sold out before you could register, runners can still check out the Chicago 13.1 Charity Program.
The Shamrock Shuffle steps off at 8:30 a.m. Sunday in Grant Park. Live coverage from the start and finish lines will be available on the NBC Chicago and Telemundo Chicago website and apps, as well as the NBC Chicago News 24/7 streaming channel.
The 13.1 will take place on June 9 in the city's Garfield Park once again.
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