The world's largest 8k road race welcomes 40,000 registered participants to kick off the outdoor running season on the streets of Chicago. Starting and finishing in Grant Park, the Shamrock Shuffle 8K mirrors segments of the famed Bank of America Chicago Marathon course. The flat and fast course is home to many personal bests and world class performaces, including the women's American 8K... [read more]

The world's largest 8k road race welcomes 40,000 registered participants to kick off the outdoor running season on the streets of Chicago. Starting and finishing in Grant Park, the Shamrock Shuffle 8K mirrors segments of the famed Bank of America Chicago Marathon course. The flat and fast course is home to many personal bests and world class performaces, including the women's American 8K record (24:36) set by Deena Kastor in 2005, and the course record (22:35) set by Kenya's James Kariuki in 1998.