Mezue ahịrịokwu na-esonụ: Onye kachasị mma n'ụwa maka ụmụ nwoke bụ Zersenay Tadese nke Eritrea bụ onye gbara ọsọ oge 56:01 na
2006 IAAF World Road Running Championships na Debrecen, Hungary. Onye kachasị mma n'ụwa ụmụ nwanyị bụ Florence Kiplagat nke Kenya onye gbara ọsọ oge 1:01:54 na 2015 Barcelona Half Marathon na Barcelona, Spain. Ihe ndekọ nke IAAF chọrọ ka a na-agba ọsọ 20 kilomita na-enweghị nnukwu ọdịda dị elu n'etiti mmalite na njedebe na ebe nnụnụ-anya dị n'etiti mmalite nke njedebe njedebe bụ ihe na-erughị kilomita iri. The Association of Road Racing Statistics nwere ihe ọzọ na-achọ ka e debe ihe ndekọ na asọmpi nke dị anya, ya mere ọ naghị anabata ọsọ nke Kiplagat n'ihi na edere ya n'ụzọ gaa ebe dị anya. Ihe ndekọ ụwa nke ARRS ghọtara bụ 1:03:21 nke Lornah Kiplagat nke Netherlands, onye dekwara oge ya na 2006 World Championships.