the Repeater wrote:
A banana doesn't have that many calories.
I am about ten pounds heavier and the same height. You need a solid breakfast with lots of carbs and a little fat, and to have many more calories along with you for the ride.
For a 2-3 hour ride, for me, that would be eating about twice what I think feels like enough beforehand, and a granola/energy bar and one of the two waterbottles filled with a sports drink.
You're not in a position to worry about eating "too much." Eat whatever. As long as it's not greazy potato chips three meals a day (and on off days) you'll be in better condition.
While what you say does make a lot of sence, I wouldn't go so far as to recommend "eat whatever". I'd pop to the shops and buy a cycling specific book on sports nutrition.
I'd go so far as to say that what you eat will have a noticible impact on your performance. Depending on your mileage (and the higher the mileage the more important), food moves away from being just "food" and becomes "fuel".
Take a petrol car and put diesel into it and see how far it goes...
An improved diet focused on your bodies needs will allow you to train longer and recover faster. A cycling specific book will also explain when top eat. The books I've read recommend to eat within 30 minutes of finishing a training ride, then again 2 hours later. Eating also at least 30 minutes or if possible at least 45 minutes before a training ride (more difficult to achieve in early morning rides).
As you read deeper into the subject you realise that processing your food requires energy from your body. Do you want your stomach to be struggling to digest breakfast while you are also asking tough questions of yourself on the bike?