Americans and British athletes compete in the first of a two-week series, with the winner earning $50 million, on Wednesday night.
A quarter of that money will go to the winner of the final, and the rest will go into the general pot.
Here’s how to watch: The winner of this year’s race will win $50,000, while the runner-up will receive $25,000.
The winner of that race will receive the money.
The loser will receive no money.
(The winner also gets to wear the American flag on their chest during the ceremony.)
The two countries have been racing for years, with Great Britain winning the gold medal in 2010 and the Americans winning the silver medal in 2014.
They’ve both won the World Cup, though, with both teams competing in the men’s competition.
This is the third time that Britain and Australia have raced each other in the world cup, with a third contest taking place in 2018.
The first two times were in London in 2010, and were won by Britain.
The last time Great Britain won the world’s first major men’s sporting event was in 1966.
The event’s winner was Michael Johnson, the only person to have won three world titles in four different sports.
The final will take place on Thursday, March 9, at the O2 Arena in London.
Watch the final live on NBC Sports Live Extra at 5 p.m.
ET on Thursday and on NBCSN at 7 p.M. ET.