Map My Tracks PLUS account holders can set heart rate zones that help to better understand how intense an activity might be.
Heart rate zones can be automatically calculated from either a maximum or threshold value. In both cases five heart rate zones are automatically calculated that can be saved or edited according to your own zone values. Up to ten zones can be added if needed.
Once heart rate zones are set each activity, that includes heart rate data, includes a breakdown of the time in each zone.
Don't know your maximum or threshold heart rate? Then carry out a simple test to establish your heart rate.