Yep- that is where they are and they are not a fun entry. This is what I have learned in the last several weeks of long and longer Saturday runs training for this marathon. Apparently, for me, it is all well and good up to mile ten and then it is not fun anymore. Seems to be my 'mental' spot consistently. By mile 12, all was well in the world. Mile 14, I saw a kid on a bike that I knew if I could catch him I could take him out and steal the bike. Mile 19, felt pretty stinkin' good and glad to be done with it :)
So- beware that mile 10 and ignore anything I say, beg, plead or ask you to do (take me home NOW!) between mile 10 and 11!