fudgie,
I'm not RJ, but the answer to your question is...208 miles, 2 hours 23 min. Of course that's by car.
Not to step on Steve's toes here, this is allowing for motorcycle time.
Fudgie, if ya come I/State, which is crowded as 7734 with TRUCKS, to Des Moines, about 3 hours and 15 minutes and back road, Hwy 141 North out of Des Moines to Hwy 44 and hang a left, to Hwy 4 and hang a right to the barn, & cell tower, the last 45 miles.
Now, if ya go North and catch Hwy 30, or hwy 20 add a hour to it....
You would fight trucks to Iowa City on I-80 to I-380 North, catch 151, changes to 218 and finally US 30 to Jefferson and head South on Hwy 4 till ya see the big old cell tower or the big ole barn. Turn left into the driveway, plenty of parking in the main garage. Right Craig?
Later is a lot of 4 lane divided, but, a whole lot less truck traffic, and if ya want an enjoyable, well 1/2 way, I'd choose the later route........