Hosts for the 2024 and 2028 Olympic Games will both be announced in July in an unprecedented double vote, the IOC has announced.
Paris is favourite for the 2024 Games ahead of Los Angeles, but the loser could get the 2028 Olympics.
The two cities are the only ones left in the race for 2024 after Budapest, Hamburg and Rome withdrew.
IOC president Thomas Bach said the governing body’s board had “unanimously approved” the decision.
On Wednesday, LA bid chair Casey Wasserman appeared to concede to Paris when he said, “we have never been only about 2024” but a spokesman later told BBC Sport: “LA is the ideal host city for 2024 and is not conceding anything in the race for the 2024 Games.”
Wasserman said the LA bid requires no public funding and all the facilities are either built or being built anyway.
Meanwhile, Paris claimed it has to go first as the site it has earmarked for the Olympic Village will not be available for redevelopment after 2024.