Rather than "sprint" (whose spelling feels a bit too close to a couple of commonly used functions), I think a term like "treadmill" comes much closer to evoking the essence of this sort of game.

When you see a hamster playing on a treadmill, it really is more fun the faster it goes. It's neat and you gotta love it -- going faster is just an Obviously Good Thing, even for the hamster.

A key conceptual difference between a sprint and a treadmill is that in a sprint, you end up at a finish line, usually someplace other than where you started sprinting, whereas on a treadmill, the point is not to get to some different place, but simply to move faster while staying in the same place where you were already.

Maybe the prospect of monks posting things like "Here's another treadmill challenge" might dampen the general enthusiam for posts of this sort. (Then again, the presumed negative connotation of "obfuscated" hasn't diminished the popularity of posts in that wing of the Monastery.)