Wow...thank you for all of your support and cheers! What a great motivator!
In answer to some of the questions posted...
My longest ride prior to the 100k was 42.5, 4 days prior to "the ride". Felt great doing it.
I know I don't change positions on my bike enough. I have a tendancy to ride on the hoods and not alter my hand positions. I really liked the posts about stretches while riding. I will be trying that! My seat and handlebars are about the same height. I probably should have done more active stretching at the rest stops. I did not go out on Sunday (the day after the 100k) but I did do my 15 mile loop on Monday and knocked a minute off my time! Didn't ride on Tuesday but did my hilly 15 (climbing 4 ridges) on Wednesday and knocked 4 minutes off that time! I guess "going the distance" helped me in more ways than I knew!! This is very exciting for me! My friend that got me into cycling did the 50k on Saturday in 2:20 and I did the 100k in 4:31. Not to sound like a witch, but WOW did that make me feel great! She was my mentor and now I have endurance I didn't know existed! My "goal" is to be a good endurance rider and fit as a fiddle! Thanks again for all the posts and hurrahs!!