Chepkoech sparkled in the men and women’s senior races while Sandra Chebet and Andrew Lorot won the junior categories in the last event.
Elsewhere, Local Organising Committee today confirmed the routes for the marathon and race walks taking place at the IAAF World Championships London 2017.
The routes, which are the final part of the competition timetable and venue plan to be announced, will offer both fans and athletes a stunning sporting spectacle.
Set against some of the capital’s most historically significant and picturesque backdrops, the 26.2-mile marathon route will start and finish at Tower Bridge in central London.
With the backdrop of the start of the races provided by the historic Tower of London, the route will comprise four laps of a 10km course on closed roads, heading west along Victoria Embankment towards the Houses of Parliament, then back alongside the River Thames.