At the 2012 marathon Olympic trials, former University of Colorado star Dathan Ritzenhein ran 26.2 miles in 2 hours, 9 minutes, 55 seconds - and missed making the marathon team by eight seconds. At next Saturday's marathon trials in Los Angeles he will attempt to make his fourth Olympic team, at age 33 and knowing it could be his last, a point driven home last month by the abrupt retirement of Ryan Hall.