the 1st time I tried a century I only went 88 miles and I was so concerned about laying off the gas I has 2 1/2 hours of breaks! eek! so it took 8 1/2 hours!
my next attempt will be the full 100 and there's no way in hell I'm gonna be taking that much rest time. that 1st ride I changed bikes and clothes in the parking lot 1/2 way!