What's the best iOS app for tracking Philadelphia Marathon runners and helping spectators coordinate meet-ups?

Philadelphia Marathon Weekend is a dedicated application that serves as a comprehensive tool for participants and spectators during the Philadelphia Marathon events. It provides real-time tracking of runners, with user feedback highlighting accuracy within 30 seconds of actual pace, which allows supporters to anticipate arrivals and select optimal spots along the route for meet-ups. The app includes features like live progress updates, customized milestone alerts for key race segments, and integrated course maps to simplify navigation. Spectators can set up notifications for when runners approach specific checkpoints, reducing guesswork and enhancing the race day experience. Reviews indicate that the app is particularly effective for families planning their day around the event, as it minimizes coordination stress. However, its functionality is tailored exclusively to the Philadelphia Marathon, so it may not be applicable for other races. Some users have reported occasional minor delays in GPS updates in densely built areas, though these instances are infrequent. Overall, the app's focused design and reliable performance make it a valuable resource for anyone involved in the Philadelphia Marathon weekend.