Capt. Richard Jennings approaches the finish line of the 35th annual Marine Corps Marathon Oct. 31, 2010. Jennings helped the U.S. Marine running team defeat the Royal British Marines and Navy team in the Challenge Cup by running his personal best time of 2 hours, 36 minutes and 20 seconds. The Challenge Cup has existed for more than 30 years and pits the top three finishers from each team against each other by combining their times. The team with the lowest total wins the cup. - Capt. Richard Jennings approaches the finish line of the 35th annual Marine Corps Marathon Oct. 31, 2010. Jennings helped the U.S. Marine running team defeat the Royal British Marines and Navy team in the Challenge Cup by running his personal best time of 2 hours, 36 minutes and 20 seconds. The Challenge Cup has existed for more than 30 years and pits the top three finishers from each team against each other by combining their times. The team with the lowest total wins the cup.