Just completed my first Century --- the October 9th Seagull Century in Salisbury, Maryland -- in 6 hours (7.5 hours including the rest stops). Started riding again this Spring (after a very long absence), had to switch to a recumbant stationary trainer for 9 weeks after breaking my collarbone, then back on the road for 6 weeks of serious training.
What a blast! The weather was nearly perfect (cool morning, warm & sunny afternoon) and the atmosphere was great. Highly recommended.
P.S. Best of all....I've lost 40 lbs since taking up the sport!