Women's winner Caroline Kipkirui, racing for Kazakhstan, reacts after the Prague Half Marathon 2019 in Prague, the Czech Republic, April 6, 2019. (Xinhua/Dana Kesnerova)

Men's silver medalist Felix Kibitok (L) of Kenya, gold medalist Bernard Kimeli (C) of Kenya and bronze medalist Stephen Kiprop (R) of Kenya pose during the awarding ceremony after the Prague Half Marathon 2019 in Prague, the Czech Republic, April 6, 2019. (Xinhua/Dana Kesnerova)

Women's silver medalist Lonah Salpeter representing Israel, gold medalist Caroline Kipkirui representing Kazakhstan and bronze medalist Lydia Njeri of Kenya (from L to R) pose during the awarding ceremony after the Prague Half Marathon 2019 in Prague, the Czech Republic, April 6, 2019. (Xinhua/Dana Kesnerova)

Kenya runner Felix Kibtok competes during the Prague Half Marathon 2019 in Prague, the Czech Republic, April 6, 2019. (Xinhua/Dana Kesnerova)

Runners compete during the Prague Half Marathon 2019 in Prague, the Czech Republic, April 6, 2019. (Xinhua/Dana Kesnerova)

Runners compete during the Prague Half Marathon 2019 in Prague, the Czech Republic, April 6, 2019. (Xinhua/Dana Kesnerova)