The only way I know is to go to your training log and change the display to time. You'll get circles colored by activity type and sized according to the total for each day, with the total time shown in the center. If you click/tap a circle it will expand out to show you all activities for that day.

Thank you. That was actually the first place I looked but it only shows individual times, no totals. I also went to the Goals section, but the ONLY option available up is a "power goal", whatever that is. I was hoping there would be the ability to set a time goal.

My training log shows total time.