In the new 3.6.0 feature "Tooltip in Calendar view" the speed in km/h gets shown with the unit min/km.
Example: running exercise 5.29km in 34:13 min
Tooltip: "Average: 9,28 min/km"
Actual average pace = 06:28 min/km
Actual average speed = 9,276 km/h
Speaking of displaying time:
in the diagrams the total time should be displayed as hh:mm:ss and the average pace as mm:ss, rather than decimal numbers.
Very much like in the Statistics dialog.