We ran the race together and finished in just over an hour; 1:00:32 and 1:00:33 to be exact. With over 40,000 participants, Chicago's Shamrock Shuffle is the largest 8K in the world. The course weaves through downtown and starts, and ends, in a park along the lakeshore. The weather was amazing. We had 80 degree temps and sun shine. It felt like summer!