QOTD: How Far Have You Gone to Rescue a Disabled Car?

My eldest son and his wife recently set out on a six hour trip North to spend the week with us, and three hours into the trip, called to let me know their van had died on a rural stretch of I-55 (dead alternator). Being past mechanics hours on a Saturday evening, there was nothing left to do but hitch up the trailer and go get them. So what’s the longest trip you’ve either made, or been on the receiving end of, for a Search and Rescue operation?