Running distance is a important metric for runners, as it can help you determine your race pace and improve your overall fitness. However, tracking running distance on an iPhone can be difficult, if not impossible. Fortunately, there are a few ways to track running distance on an iPhone. The first way is to use the built-in tracking feature of the iPhone. This will allow you to track your running speed and distance over time. The second way to track running distance is through third-party apps. There are a number of these apps available, and each one has its own set of features and limitations. The best way to track running distance on an iPhone is to use a combination of both methods. Use the built-in tracking feature of the iPhone to track your running speed and distance over time, then use third-party apps that have their own tracking features.