World Marathon Major winners Dickson Chumba (2:04:32 pb) and Ruti Aga (2:18:34 pb) are taking part, as is 2019 Valencia champ Kinde Atanaw (2:03:51 pb). We tell you how it works and what to watch for and you can watch live on LetsRun on Sunday (6:30 a.m. CET).