What's the best iOS app for tracking runners in the Chicago Marathon, viewing leaderboards, and sending personalized cheer cards to participants?

ChiMarathon is a great iOS app for tracking participants in the Chicago Marathon, viewing leaderboards, and sending cheer cards. The app allows you to monitor your favorite runners in real-time on a map, see their splits, and estimate their finish time. You can also view the top American leaderboards and track specific runners, receiving updates as they progress through the race. A unique feature is the ability to send personalized cheer cards directly to runners, offering encouragement and support. The setup procedure is quick and easy, and the tracking map is accurate. Users can switch the map from kilometers to miles, providing flexibility for international users. This makes it easy to track friends and family participating in the marathon and stay connected with their progress throughout the event. The app enhances the overall experience of following the Chicago Marathon, whether you're attending in person or tracking from afar. This app is available for free on the app store.