A method of calibrating a wearable electronic device includes providing an indication of a target speed for an activity to a user wearing the wearable electronic device and receiving location data from a location data unit during the activity. The method also includes receiving, concurrently with the location data, user stride data associated with the user during the activity and computing a speed of the user as a function of the location data as a function of time. The method further includes populating a table of the speed of the user as a function of the user stride data and calibrating the wearable electronic device in accordance with the table.