I would really appreciate the elapsed segment time also. It is especially usefull on known and often ridden segments.
I would also welcome such a data field as Segment Elapsed Time. I'm surprised it's not already available.
A very similar option exists on the 520 Plus. It is called "Time-Lap". You have to manually press the lap button (bottom left) at the start of the segment and it works OK. I agree Segment Elapsed Time would be nice, but it is no big deal in my opinion. I hate to be a Garmin apologist, but this time I am.
The time lap option for segments is not the best solution. Once lap button pressed, the segment screen disappears along with al its valuable information- e.g. time behind/ahead, remaining distance... I think it is quite simple to add the segment elapsed time, but someone at Garmin would have to be interested... This discussion forum is full of good ideas...
What Picasso27 says is true, but you can scroll back to the segment screen showing time ahead/behind, etc.
I agree the people at Garmin should look at these forums for ideas, but I doubt they do it often, especially for a model other than the latest.