The ChiMarathon app is an essential tool for anyone participating in or attending the 2025 Bank of America Chicago Marathon. This free app provides a wealth of features aimed at enhancing the race experience for both runners and spectators. Users can access live race day tracking, allowing friends and family to follow their favorite participants in real-time. Additionally, the app includes professional athlete profiles, live streaming of the race, and current weather updates, ensuring that users stay informed throughout the event.

Another standout feature is the interactive course map, which helps users navigate the marathon route effectively. Participants can also share their bib numbers digitally, making it easier for supporters to locate them on race day. A unique aspect of the app is the digital cheer feature, where fans can submit encouraging messages that may be displayed along the marathon course. Overall, the ChiMarathon app is a comprehensive resource designed to elevate the marathon experience.