A fast field of Kenyans and Ethiopians will contend for titles in the French capital next month.
The Ethiopian has three Olympic gold medals and one silver on the track.
Kenyan wasn't expected to prevail in the French capital.
Competitors will run across tiles that harvest the energy in each footfall.
Several action-packed races will now fall on the same weekend.
Kiptoo, Jeptoo come away victorious.
The Paris Marathon is the biggest contributor.