On May 23, 2006, at 1830 central daylight time, a Cessna 172L, N7624G, registered to and operated by a private owner, as a 14 CFR Part 91 personal flight, ran off the end of runway 20 during landing roll at the Franklin Wilkins Airport, Lexington, Tennessee. Visual meteorological conditions prevailed and no flight plan was filed. The airplane was substantially damaged. The private pilot was not injured. The flight originated from the Mc Kellar-Sipes Regional Airport, Jackson, Tennessee, on May 23, 2006 at 1800. The pilot stated upon arrival at the destination airport he entered a left downwind for runway 20. He noticed while on short final that the airplane was high over the numbers and he reduced power with full flaps extended. The pilot stated that when he reached the midfield point over the runway, he realized that the landing was to long, and "decided that his chances of getting the airplane stopped on the runway were better than aborting the landing". After the airplane landed he locked up the brakes and slid off the end of the runway, down an embankment, and into trees. The pilot reported that there were no mechanical problems with the airplane prior to the accident.