Defending champ Brigid Kosgei is back, but Jordan Hasay is the only other woman faster than 2:22:56. Boston champ Lawrence Cherono & Dubai champ Getaneh Molla join Mo Farah & Galen Rupp in the men's race. And Amy Cragg is a scratch.
Kosgei comes in as the defending champion after winning in 2018 in 2:18:35 and then winning London in 2:18:20. She is joined by Betsy Saina (2:22:56) and Mexico's Madai Perez (2:22:59). Chumba won Chicago in 2015, but will only be the fourth fastest in the field as Dubai champ Getaneh Molla (2:03:34) and runner-up Herpasa Negasa (2:03:40) lead the way along with previously announced Mo Farah. USA's Amy Cragg, Chris Derrick and Brogan Austin have all withdrawn.
Geoffrey Kamworor is looking to become the 1st man since 2006 to successfully defend his world cross country crown. Can he do it? If he falters, who is likely to win? Can the Americans possibly pick up their first individual medal since Alberto Salazar's silver in 1982? They've certainly got a good chance, particularly if Olympic 5000 silver medallist Paul Chelimo, who is in Uganda ready to race the 10k (but currently only on the 4 x 2k relay), ends up running.