I have nearly 5 years of activity data from various forerunners that I have uploaded to Garmin Connect. I was pretty excited about the search function to do some data mining of my activities since I have been an on again off again runner. I specifically wanted to search all my activities to see the last time I ran > 10 miles at faster than a 10:00 minute mile pace.
Unfortunately this is not really possible. I can specify distance and time but that query isn't accurate enough when the distances can be anywhere from 10 to 20 miles.
I would think this would be a sought after feature.