glad somebody started the kenworth/honda comparison....
basically what we have is "i have a miata, and i want to haul some gravel. i've read
the mazda isn't so good for heavy hauling, and i need 4WD and a heavy-duty
suspension. do you think i need a pickup?" and "what if i zip-tie a receiver under
the bumper and pull a horsetrailer. do you think handling will be affected, like on
mountain switchbacks and on the racetrack?"
your road bike is fine for any distance tour. the question is how much are you
gonna carry. go light (credit card or sag/supported tour) and enjoy it. but if
you're gonna haul camping gear and stuff, then use a suitable bike - specific
touring bike or an mtb. find something with a stronger wheelset, wider tires,
appropriate gearing, steel forks, and rack mounts.
you might manage pulling a trailer. or not.