Videos, results and highlights from the 2012 Olympic Marathon Trials in Houston, Texas on January 14, 2012. All the best will be fighting for a spot on the US Olympic team to represent the country at the London Olympic Games in August 2012. Expect to see Dathan Ritzenhein, Ryan Hall, Meb Keflezighi, the Black Cactus, Brett Gotcher, Deena Kastor, Desiree Davila, Kara Goucher, Shalane Flanagan, Amy Hastings and many more step to the line for there chance to get to London.