This time Mo Farah, in an unusual, seldom-run event. You will find the technology, both for the viewer and for the athlete, quite interesting. I don't know it they are going to have the pacing lights at the Olympics next year or not. Suspect not.
The various Ingebrigtsens from Norway, especially Jakob, continue to do well. Next year's 5000 meters is going to be awesome. Because of scheduling, multiple heats, and crowded fields, Olympic results are seldom world records. Maybe this time.