The Cessna 182 took off "right at max gross weight," accelerated, but did not climb. The pilot maneuvered around trees immediately after takeoff, but the airplane eventually struck trees in its path. The pilot reported that the airplane revealed no mechanical deficiencies during run-up and the takeoff. Weight and balance calculations after the accident revealed that with 3 adult males, 3 golf bags, luggage, and full fuel tanks, the airplane's estimated weight was 3,135 pound. The manufacturer's maximum allowable gross weight was 2,950 pounds. The runway was 3,075 feet long, at 2,084 feet elevation, and the density altitude computed for the departure airport at the time of the accident was 3,571 feet. The pilot reported that he did not conduct weight and balance calculations "with a pencil and paper" prior to departure.