Bug in veryActive distance figure

[pauloamaral]

Dear Dev Team,

I logged the activity "Run, for 1 hour, 13 km" (what means being very active).

When I call the getActivity API, the distance figure of the "logged activity", and the figures for the distances named "total" and "loggedActivities" are all  with the correct value.

However, the figure for the distance named "veryActive", which I expected to see as 13km, is 12.98km.

Is there any reason for that, or is it a bug?

stdClass Object
(
  [activities] => Array
    (
      [0] => stdClass Object
        (
          [activityId] => 12090
          [activityParentId] => 90009
          [activityParentName] => Run
          [calories] => 1010
          [description] => 8 mph (7.5 min/mile)
          [distance] => 13
          [duration] => 3600000
          [hasStartTime] => 1
          [isFavorite] => 
          [lastModified] => 2014-09-08T10:23:52.873Z
          [logId] => 100788122
          [name] => Run
          [startDate] => 2014-09-08
          [startTime] => 08:00
          [steps] => 13727
        )
    )
  [goals] => stdClass Object
    (
      [activeMinutes] => 30
      [caloriesOut] => 2924
      [distance] => 8.05
      [steps] => 10000
    )
  [summary] => stdClass Object
    (
      [activeScore] => -1
      [activityCalories] => 1010
      [caloriesBMR] => 784
      [caloriesOut] => 1720
      [distances] => Array
        (
          [0] => stdClass Object
            (
              [activity] => total
              [distance] => 13
            )
          [1] => stdClass Object
            (
              [activity] => tracker
              [distance] => 0
            )
          [2] => stdClass Object
            (
              [activity] => loggedActivities
              [distance] => 13
            )
          [3] => stdClass Object
            (
              [activity] => veryActive
              [distance] => 12.98
            )
          [4] => stdClass Object
            (
              [activity] => moderatelyActive
              [distance] => 0
            )
          [5] => stdClass Object
            (
              [activity] => lightlyActive
              [distance] => 0
            )
          [6] => stdClass Object
            (
              [activity] => sedentaryActive
              [distance] => 0
            )
          [7] => stdClass Object
            (
              [activity] => Run
              [distance] => 13
            )
        )
      [fairlyActiveMinutes] => 0
      [lightlyActiveMinutes] => 0
      [marginalCalories] => 916
      [sedentaryMinutes] => 570
      [steps] => 13727
      [veryActiveMinutes] => 60
    )
)

[JeremiahFitbit · Accepted solution]

Manually logged activity distances are converted to and stored as steps. The number of steps is calculated by dividing the activity distance by the walking or running stride length. Because of this, there is a small margin of error in the rounding.