Chicago Marathon 2024 Apparel. Commonwealth unisex chicago marathon landmark long sleeve tech tee. As a world marathon major with a projected 50,000 runners this year, the chicago marathon expo was packed with participants, and many of the biggest brands in running.

As a world marathon major with a projected 50,000 runners this year, the chicago marathon expo was packed with participants, and many of the biggest brands in running. And, nike did not disappoint for 2021!