I think Haffy6, The G Team and I still hold the record - 2 1/2 hours.

We had 2 cars, radios, cell phones, and all the waypoints on printed maps. We divided Bangor in half, and each "team" kept the other informed about "hits".

But once you get the coordinates, the actual hunt for the cache is the best part. That could take you some time! LOL!