 In this Friday, April 10, 2015 picture, Egyptian runners warm up in the Mohandiseen district in Cairo, Egypt (Photo: AP)
 In this Friday, April 10, 2015 picture, Egyptian runs cross a street in the Mohandiseen district in Cairo, Egypt (Photo: AP)
 Egyptian runners participate in Cairo's annual Half Marathon in the Heliopolis district in Cairo, Egypt, Friday, April 17, 2015 (Photo: AP)
 Egyptian runners warm up before they participate in Cairo's annual Half Marathon in the Heliopolis district in Cairo, Egypt, Friday, April 17, 2015 (Photo: AP)
 FILE - In this Friday, April 10, 2015 file photo, runners take advantage of Cairo's empty streets during an organized run in the Mohandisseen district of Egypt's capital (Photo: AP)
 An Egyptian volunteer holds water bottles for passing runners participating in Cairo's annual Half Marathon in the Heliopolis district in Cairo, Egypt, Friday, April 17, 2015 (Photo: AP)
 In this Friday, April 10, 2015 file photo, runners take advantage of Cairo's empty streets during an organized run in the Mohandisseen district of Egypt's capital (Photo: AP)
 In this Friday, April 17, 2015 photo, Egyptian volunteers at a water stop offer water to runners participating in Cairo's annual Half Marathon in the Heliopolis district in Cairo, Egypt (Photo: AP)
 In this Friday, April 10, 2015 file photo, young Egyptian women run in the Mohandiseen district in Cairo, Egypt (Photo: AP)
 In this Friday, April 17, 2015 photo, Egyptian runners participate in Cairo's annual Half Marathon in the Heliopolis district in Cairo, Egypt, Friday, April 17, 2015 (Photo: AP)
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