During an activity, distance is shown to two decimal places. When the activity is saved and you look back at the activity in your history, the distance only shows one decimal place and is rounded up/down. But on Garmin Connect looking back at the same activity, you can see the accurate distance.
My old 800 used to always show distance to two decimal places, both during the activity and afterwards. Is there a way to do the same on an 830? If not, why the unnecessary data compression?