With the ChiMarathon app, you’ll get everything you need to be prepared for the 2023 Chicago Marathon. This includes the official race app, powered by Tata Consultancy Services.

It includes the most important information you’ll need to know about the race, including the race date, location, course map, and course description.

You’ll also get access to a full course description with all the important information you’ll need to know, as well as the best training tips and strategies.

The app also lets you keep track of your favorite runners and view their profiles, as well as keep you updated on what they’re doing in the race.