Women's world record holder Ruth Chepngetich is set to race in the London Marathon on 27 April. The Kenyan, 30, ran the fastest time in history by a female athlete at the Chicago Marathon in October,

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Houston Half Marathon returns with a stacked field ready to take on one of the fastest courses in the world. For the last three years, three women have lowered the American record on the flat route. The men’s American record was also set there in 2007 when Ryan Hall blazed 59:43 for 13.

Emile Cairess leads the British charge at this year's London Marathon, where Eilish McColgan will make her debut over the distance on 27 April.