If so ... tell us about it!
Mine was in 1994. I had been following a training plan I found in a book (although I can't remember which book). I had done about 65 miles and that went well, so 2 or 3 weeks later, I decided to do 80 miles. Then I was going to do my century a couple weeks later.
However the morning of the 80 mile ride, the weather was great and I felt good, so I figured, "why not just finish off the last 20 miles and get my century now!"
My ride was a solo, and consisted of a series of loops of about 25 kms through the city, into the local park, along a quiet road with mansions on either side, and back to my apartment again where I refilled my bottles and ate a little bit. After about 4 or 5 of these loops I got bored and started doing a different, but shorter loop, until I was finished.
Using loops was a great idea (although a little bit boring) which I've used on many occasions since to do centuries, especially winter centuries.
Unfortunately though, I really had no idea about eating and drinking on long rides. Back then the big thing was trail mix (GORP) ... and I've since discovered peanuts and I don't get along. I also remember having a few small perogies on one stop. That was about it!
The last 20 miles was very painful and slow ... and if I weren't the stubborn person I am, I would likely have quit. But I was determined to finish!!
I did ... and then I announced that I would NEVER do something like that again!!
The 100+ centuries I've done since then have been much easier than that one ... amazing the difference eating and drinking regularly can make!
What was your first century like?