Spira Footwear, which features controversial and banned spring technology was worn by the top five male and top two female runners at the 30^th annual Detroit Free Press Marathon.

Kenya’s Christopher Kiprotich was the men's overall winner, finishing the 26.2 mile course in 2:15:15, while fellow countryman Hillary Lelei came second with a time of 2:18:1. Henry Githuka, also of Kenya, finished third in 2:21:52, followed by Dmitry Sivou of Belarus with a time of 2:22:25. Poland’s Jaroslaw Chichoki came fifth with 2:23:22.

In the women's division, Ukrainian Anzhelika Averkova was the overall winner with a time of 2:34:50, narrowly missing the course record by 24 seconds. Polish Wioletta Kryza finished second in 2:41:50.

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