I've got a couple of great ultrarunning related progrock songs here. Just kidding of course, but the songs could be interpreted also that way.
First Long Distance Runaround by Yes (In The Present Tour 2008).
And then Sole Survivor by Asia (Phoenix Tour 2008).
Both of these bands have magnificent Steve Howe on guitar. And both of these bands will tour together in 2009. And I'm old enough to like both of these bands (and still young enough to remember them :-)