ChiMarathon

The Bank of America Chicago Marathon App, Powered by Tata Consultancy Services is the perfect resource to prepare for the 2025 Bank of America Chicago Marathon. Whether you’re running or spectating, the free mobile app includes everything you’ll need to be prepared for a great race week experience. The 2025 Official Race App features unlimited live race day runner tracking, professional athlete profiles, live broadcast streaming, real-time weather, an interactive course map, participant bib share and more. Fans can submit a digital cheer through the App for the chance for your message to be displayed on the Bank of America Chicago Marathon course as your participant goes by. Visit the “Cheer” page in the app to submit your message.