My wife was resting on a log and I walked up and saw this friendly little fellow about two feet away on the same log. We are not excitable folks and I just asked her to stand up and look at the snake. She immediately got out her iPhone and started sending Instagrams to her children. A typical family reaction to a surprising situation. I checked the following source:
Pack, Herbert J., "Bulletin No. 221 - Snakes of Utah" (1930). UAES Bulletins. Paper 182. http://digitalcommons.usu.edu/uaes_bulletins/182and quickly identified the snake as a Utah gopher snake, Pituophis catenifer stejnegeri. There was a large group of people coming down the trail, including a number of small children, and for the snake's protection and theirs, we encouraged the snake to move off of the log and out into the grass.