Out here where Hundreds of Bikes ride the Pacific Coast, on tour, every summer .. a road bike, with a BoB Trailer in tow, is a common choice .

BOB Yak Bike Cargo Trailer | Bike Trailer


with the Extra Wheel .. another option , there the 3rd trailer wheel is just like the front on the bike so same tube and tire spare will work for all 3

they let you mount a Pannier pair on it, well behind the short, road bike chainstays that often interfere with a rack & panniers, on the bike itself.

Extrawheel Voyager Bike Trailer | Bike Trailer



either the only thing you change on the bike is the rear QR skewer.