About 8 1/2 hours one way for me. I see several others have that beat by a mile.
(or hundreds of miles :unsure
Had a multi-year stretch for a while when I got to one per season --- hasn't worked the last couple of years.
It'd be a little different if my immediate family were closer to Ames — but I usually have to do either one or the other when it happens. ISU's mostly on the way and maybe only extra 3 hours, but I'm not able to take enough days off at a time to encompass all of it.
I know — nobody asked me to write a novel about it. Sorry. :SLEEP: