Note that we said “on record-eligible courses.” Some well-known fast times, such as Galen Rupp’s 59:47 at the Ostia Half Marathon in 2018, aren’t listed below, because they were achieved ...

LEFT: Joyciline Jepkosgei at last year’s Barcelona Half Marathon, RIGHT: Geoffrey Kamworor during a past National Police cross country championships at Ngong Racecourse /FILETwo-time New York Marathon ...