I agree with every one else... if you've done 80 you can do a century with no problem. Yep, you HAVE to eat before riding... especially distance! The morning of a century I eat a combo of carbs and protein... so a hard boiled egg and some oatmeal... or heck, a jack in the box sour dough sandwich if I'm running late and driving to get to the start!

for centuries I utilize every SAG stop. I eat a small amount at each and use the bathroom every time. I skipped one once and ended up in a small shrub at mile 80 while riders snickered and yelled "You OK?" uh... I WILL be... LOL.

Also, I start hydrating 2 days prior... I drink a little more water, and a little less caffeine so my body has plenty of fluid! I have also found that for me, having one bottle of water and one bottle of sport drink (I like the grape flavored Cytomax but whatever works for ya!) really helps my ride... just that little bit of constant carbs makes a difference in how I feel... as well as replacing lost salt when it's hot out...

have fun and I'll look forward to hearing about your success!!!