FALLING TEMPERATURES PRESENT EXTRA CHALLENGE FOR RUNNERS, ORGANIZERS IN LAS VEGAS By David Monti (c) 2011 Race Results Weekly. Used with permission. LAS VEGAS (02-Dec) -- With their early morning starts, runners competing in the big marathons in Chic...<\/div>\r\n\t\t<\/div><\/td><\/tr><\/table>\r\n\t\t\t\t<\/div>\r\n\r\n\r\n\r\n\r\n\r\n