Does riding a century always have to be an organized ride? I have done several metrics but they have always just been long rides with DH that ended up at about 100 km. Actually, both times we got home at about 96- 97 km and rode around the neighbourhood till the odometer rolled. Anyway, we figured it would be just over 160km to ride to the next town and back so that will probably be our first full century. I'd rather do a flat one first though...