In the good old days before Garmin Connect, when I could download data to my local computer for analysis, I could set my cursor on a workout's speed graph and it would show the map location where I hit that speed. Can't figure out how to do this for my 310XT and Garmin Connect. Can't even figure out what terms I should search this forum on to describe that feature.
You mean something like this? If you go to the activity page, click the Player link. If you have trouble with that page, have a look at the page address. If you see jsPlayer change that to player. That should work.