Cheruiyot and Kitwara return to World's Best 10k

Four-time world champion Vivian Cheruiyot and the most successful man in the history of the race, Sammy Kitwara, are both returning to the World's Best 10k, an IAAF Gold Label Road Race, whose 18th edition will be held on Sunday afternoon (1) on the Teodoro Moscoso bridge in San Juan, Puerto Rico.