I ran the Pumpkin Push 8k today in 41:33. My knees didn't seem to mind this too much, so I'll probably do some similar length runs in the future. I think this course is actually longer than 8 kilometers, however, and I'm going to go back soon and walk it with the GPS to see. Either that, or the mile splits markers were all in the wrong places. That distance would have had me slowing down more than one minute over the last mile and I just know that didn't happen.