I've definitely gotten my share of bad info in the distance/hills/service/etc. department. And I accept the info graciously, then take what has been said with a grain of salt. So it's easy to fall into the trap of all advice given on the road (that isn't from other tourists or cyclists) is bad. But sometimes it can come back and bite you in the posterior.
For example, when I toured the Pacific Coast in 2006, I ended up staying at the Point Reyes Hostel. This is a bit off the main route. When I called the hostel to confirm that I was coming that night, they warned me of the "big hill" between Point Reyes Station (the town, on route) and the hostel about six miles away. "Pshaw", I thought. I had been biking down the coast for two weeks, over many a hill. I made it up and over the Crescent City Hills and Leggett summit, the dreaded two "big hills" on the route (between Astoria and SF), ones they warn you about in "the book". I figured if I made it over all that, the "hill" the hostel staff mention should be a cakewalk, er, roll, right? Probably nothing at all.
Big mistake! That was quite the hill, almost 850 feet in elevation (starting from near sea level), and some of the steepest pitches that I encountered on that tour. I made it up, yes, but there was a section on the return I needed to walk. It was posted at 17% grade!
So I guess what I'm saying is: Don't get too cocky when offered advice from the locals. While a lot of it may be bad, sometimes they are right.