the activity to which this update relates. oints A list of points indicating new location(s) to append to this activity. The list of points should be space delimited in blocks containing latitude, longitude, altitude, and time data. These blocks are themselves space delimited. Optional parameters NEW! r Heart rate data (bpm) containing heartrate and time data delimited by a space cad Cadence data (rpm) containing heartrate and time data delimited by a space wr Power data (watts) containing heartrate and time data delimited by a space Returns If the request was successful, the XML response will contain a message indicating that the activity has been updated. If the point data supplied was in an incorrect format, the XML response will indicate an error. Notifications Get more. Upgrade to Map My Tracks PLUS This is a Map My Tracks PLUS service. Map My Tracks PLUS is an affordable way to better understand your performance and organise your workouts on the web. Upgrade today for as little as $5/month to access all the extra features .