It turns out that I can indeed run 3+ miles on the track, but there is a large difference in damage to my feet when doing so barefoot over the 2 miles of the random distance run. Combined with the truly bizarre injury to one of my fingers that seems reluctant to heal, I am presently fairly leaky. Ow.
I probably would've injured my finger less if I didn't have this heavily diminished sensation to all my fingers. I guess it's good to know that at the right pace (and if my feet were to be built back up to being Texas Tough™) I could probably run very long distances. This felt much better than the RDR (although I suspect I wore myself down significantly at the start of that because I wasn't sure what kind of pace I could keep on a track).
Rereading Orson Scott Card's 「Pastwatch: the Redemption of Christopher Columbus」. It's rather good - he is one of those sci-fi authors whom I'm embarassed to like (he's outspoken on several societal issues on a side that makes it hard for me to respect him as a person). Oh well - such is life - I would not close my ears to Handel's 「Messiah」 any more than I would be ashamed of liking HaTikvah.