She held off competitors from the likes of compatriot Brigid Kosgei, who was bidding to win the occasion for a 3rd consecutive yr however may solely handle a fourth-place end.
Jepkosgei, who gained the New York Marathon in 2019, smashed her personal private finest to change into the seventh-fastest girl in historical past over the gap.
She completed forward of Ethiopia’s Degitu Azimeraw and Ashete Bekere, who completed second and third respectively.
In the lads’s elite race, Sisay Lemma of Ethiopia was a cushty winner, ending in a time of two hours, 4 minutes and one second.
He raced 27 seconds forward of Kenya’s Vincent Kipchuma in second, with Mosinet Geremew coming in third.
Meanwhile, Switzerland’s Marcel Hug and Manuela Schar accomplished a double for his or her nation in the elite wheelchair occasions.
Both set new course information, with Hug profitable the lads’s race in one hour, 26 minutes and 27 seconds.
Schar then set a brand new course document in the women’s race, ending in a time of 1 hour, 39 minutes and 52 seconds.
In near-perfect circumstances, about 36,000 contributors tackled the normal course from Greenwich to Westminster for the primary time in greater than two years.
Last yr’s marathon was held on a modified course — 19.6 laps of St James’s Park in the shadow of Buckingham Palace — and solely staged the elite races due to the pandemic.