Ran 2.5 miles just before dark

My wife and I went out in the late afternoon. The sun and clouds were in the sky when we left, but the sun went down while we were out. We had no problems seeing the path, though, because it was the dusk that occurs after the sun goes down and before it gets dark.  I too a one-minute rest at the turn-around bench but no other rest stops. I felt pretty good when we turned around, and I was tempted to go a bit further. However, when I reached my car, I was tired and glad I hadn't gone further. I didn't check my thermometer when I got back, but the temperature was probably in the high 30s (F).