I was quite disappointed to see that "Bike Sebring" was not just laps of the track.

I used to shoot sports car racing there, and I have dreamed of doing an endurance event there (of course, right now a metric century is probably enough to kill me, so maybe "endurance" isn't the right title---particularly when talking so someone like OldTryGuy someone who considers a daily century barely sufficient.) I don't recall the roads around the track as being especially cycling-friendly---not bad, but 70 mph traffic.

27 laps of the track, though .... that would be a decent century.