Personal Worsts? It seems like a potentially more interesting topic than PB/PRs. Sure, put in your excuses too unless you are a no excuses type. Kind of wondering if those who like to rip on people (like when Webb runs "only" 3:59 or whatever) have ever run poor races, so also add if you have ripped into an elite on this message board for a poor race.
NO (at least not that I remember now :)
mile 5:06 (first track race)
2 mile 10:47 (first 2 mile race)
5K road 15:52 (only one hard workout prior)
10K 58:something. (My first running race at age 13 or 14 done on no training.)
1/2 marathon: 1:21 (trail run with 1500+ ft. gain, out of shape, only 1/2 marathon so PR too)