Wurth-Thomas qualified for the 1500 m at the 2008 Summer Olympics by finishing 3rd at the 2008 U.S. Olympic trials (4:08.48). In Beijing, she finished 8th in the opening round, and did not qualify for the finals.[1]
In 2009, she set a personal best in the 1500 m by running a 3:59:98 at the Golden Gala in Rome, at the time becoming only the 4th American female to break 4:00 at an outdoor 1500 m competition. She also qualified the 2009 World Championships by finishing second at the US Championships to Shannon Rowbury, with a time of 4:06.00.[2] Wurth-Thomas finished 5th at the World Championships, with a time of 4:05.21.
*Distances have varied as follows: Mile (1967–2002), except 1997 and 1999, 2007 and odd numbered years since 2011, 1500 meters 1997, 1999, (2003–6, 2008–2010) and even numbered years since 2010