Kenya's Joyciline Jepkosgei has won the women's London Marathon.
She ran a personal best time of 2:17.42 after storming clear of her rivals.
It makes her the seventh fastest woman in history.
Degitu Azimeraw of Ethiopia was second with compatriot Ashete Bekere third.
Charlotte Purdue finished 10th, finishing in a time of 2:23.26 - the third fastest in British history.
Shortly after the women's race finished, Ethiopia's Sisay Lemma won the men's marathon.
Lemma, 30, ran superbly to record a time of 2:04.01 and claim victory on the streets of the capital.
It makes him the sixth fastest runner ever at long-distance running's blue riband event.
Phil Sesemann, a junior doctor from Leeds, ran a remarkable race to finish seventh in his first ever marathon.
Sesemann celebrated his 29th birthday by being the first British man home in a time of 2:12.58.
Earlier, the men's wheelchair race was won by Marcel Hug, who claimed his third victory in London.
The Swiss, nicknamed 'the Silver Bullet', put in a dominant performance to win in a course-record time of one hour, 26 minutes and 25 seconds.
Daniel Romanchuk of America was second while Weir came out on top in a tight race for third with Brent Lakatos.
It was a double celebration for Switzerland after Manuela Schar won the women's wheelchair race, beating her own course record by six seconds in 1:39.51.
