When using Garmin Connect, it would be nice to see a column that has the Cumulative Time (Total Time) after each split. Either on the "Overview - Laps" screen or the "View Split" screen.
If your splits are 1 km intervals, it is nice to look at split 5 to get a 5K time rather than adding up all splits.
Example (or see file):
Split Time Cumulative Time
1 5:01.00 05:01.00
2 5:02.00 10:03.00
3 5:03.00 15.06.00