After riding all that way yesterday and "breaking" all the rules and conventional wisdom about it. It is possible for just about any one to ride a century and survive. So to all the ladies out there that often ask can I be able to ride 100 miles in days/weeks/months? Yes you can. In fact you can likely go outside and do one right now if you can find a flat enough road for 3/4 of it. What about saddle time? Oh get over it your gona hurt regardless of how prepared you are that's part of the reason they are such a milestone for a cyclist. The biggest thing you need is the will to make the ride.
However, here are a few things that you need to avoid doing if you actually want to make the whole ride.
First, even though I said you technically can do it without base miles, I don't do it. My last ride was 33 miles over a week ago. And the total for all of June was only 37 miles more than yesterday.
Second, no matter how fat you are it is best to get around 300 calories in you per hour, which is adjusted based on body weight. I figured I had 43 pounds of extra fat to burn so I only had 110 the whole time. DON'T Ever do that.
Third, you need to have a supply of protien that you are ingesting along the ride, if you don't eventually your muscles will pay. Just ask my shourlders and arms. Muscles not directly used in propling the bike can be cannabalized by your body to make glucose.
Fourth, always be sure to drink at least one 20oz bottle of water per hour of riding. So people say you should drink 2. I however was to lazy to get off my bike more then once so I did it on four bottles in seven hours. PLEASE DON't ever try that unless you have no other choice.
Fifth, have some type of energy drink every few bottles.
Sixth, always plan ahead for a century, don't make up your mind 20 minuets before you do it.
Have fun and ride safe .