The heart rate monitor calculates your running pace and distance based on your user profile and the motion measured by the sensor on every stride. The heart rate monitor provides running pace and distance when GPS is not available, such as during treadmill running. You can view your running pace and distance on your compatible Garmin^® device when connected using ANT‍+^® technology. You can also view it on compatible third-party training apps when connected using Bluetooth^® technology.