I’ll bite...
My longest, fully loaded day was about 140 miles. Not super hilly, but definitely not flat. It came near the end of a nearly 4 month trip from the west coast (Seattle) to the east coast (Maine) and then south to Philly. I was wiped. The campground I was supposed to stay at maybe 11 miles before the end was flooded due to Hurricane Floyd the day before. Had to get a motel room and was glad I had a relatively easy day after that.