First snake of the year

While running 2.5 miles on the trails at the park this evening, I passed a snake.  The business end was under some brush along the trail, so I'm not sure what kind of snake it was.  I think it was a cotton mouth.  In any case, it was the first time I have seen a snake on the trail this season.  Of course, it does not mean that I have passed over some others; just the first one I have seen.