Startup Idea : Split-Time to Destination

Sometimes we want to get to a desired distance is a certain amount of time, whether you are running or walking, maybe even driving. However, many would want a way : an app or device/watch , that can alert us in real time depending on the speed we are going if we are moving to slow or faster or right on pace to make that distance at the desired time.The app can be explained as this:set the preferred amount of meters and desired time. When running the device/watch/app/ will alert us if we are lagging, on pace or moving to fast to get to that distance at the desired amount of time.