The longest trip I've taken in my '50 3100/3spd/4.11 in the 2.5 years I've had it has been from the north side of Houston, TX to Austin, TX for the Lone Star Round Up, twice. It's only around 150 miles, but the first time we went, I had only previously driven the truck about 15 miles from home, and that first trip up was mostly in the rain with non-functioning vacuum wipers. We survived and had a sunnier trip the next year. (Won't be making it up there this year due to scheduling conflicts, maybe next year...)

I've driven it to a few other shows around 45 and 60 miles away, and drove it into downtown Houston around Thanksgiving for the Autorama (I've always been leery of "inside the Beltway" of Houston due to not having blinkers yet).