The world's fastest marathoner — Eliud Kipchoge — is the odds-on Olympic favorite, but can he handle the heat?
The Tokyo Games will play host to one of the greatest 10,000m show-downs in Olympic history, with the two fastest female athletes of all time squaring off, and Sifan Hassan going for history.
A likely tactical race will leave the men's Olympic 5000m open to a strong kicker from anywhere.
When it comes to the 1500m races in Tokyo, nothing less than two gold medals will suffice for Kenya given the world-leading ability of their stars: Faith Kipyegon and Timothy Cheruiyot. After commanding performances at the Monaco Diamond League, they are very much the athletes to beat.
A wide-open men's field promises an entertaining race, with an extra man in the mix.