Very nice report - please keep them coming. I'd like to get into randonneuring but I don't know if I've got the stamina. My longest rides ever have been century rides on three occasions, and I found them difficult. I'm very impressed with people that can do the 200, 400 and 600 km brevets.
Have you ever done the 1200 km Paris-Brest-Paris ride? I understand that's the Holy Grail for randonneurs.