Congrats, han-grrl! Tell me more about your race strategy. Did you stop between laps? How long? I've done a few 24-hour races (5-man relay), so I would ride a 12 mile lap, and then rest for a few hours. But I rode as hard as I could for the full lap.

I've considered doing a solo endurance race. I'd definitely start with an 8-hour one. Solo 24-hour is damn hard core! Another advantage of an 8-hour race is that there is no night riding. In my last race, I had two night laps

Did you have a crew (or at least a cheering section?) What kind of race course was it? Single track? Pretty technical? Long climbs?

So your goal was 4 laps at 10K, and you did 6 laps at 12K?!!? Damn! You need to reevaluate your abilities!