I was talked into my first Century years ago by a biking friend. It was in May in Eastern Washington. I was mainly a hiker and cross-country skier and biking was a fill in activity. I had not been on the bike since the previous Oct. It was an incredibly painful experience with the butt and shoulders taking the brunt of that pain. My legs were okay. We did it again the next year but this time I trained and biked in the months before and it was much more pleasant.