Half Marathon X F Marathon Chicago 2025. Experience chicago’s original winter half marathon at the 16th annual f^3 lake half marathon & 5k! The 16th annual f^3 lake half marathon & 5k is on saturday january 25, 2025.

Fleet feet training x ces offers a summer marathon program tailored for beginner and intermediate runners aiming to complete a half or full marathon. If you’re looking to step up your running game in illinois, chicago is the place to be for half marathons.