Los Angeles will benefit from having longer to get ready for the 2028 summer Olympics after the International Olympic Committee (IOC) decided to award the hosting rights to two Games at its session vote in Lima this week, mayor Eric Garcetti said.

Past Olympic hosts had seven years to prepare from when they were awarded the Games to their staging, compared to LA's 11.

Many host cities, including Athens 2004 and Rio de Janeiro last year, struggled to get ready in time for the Olympics and had to race to complete the venues, leading to higher costs and allegations of corruption in awarding contracts quickly.

"It gives us the opportunity to think about every resident in Los Angeles," Garcetti told Reuters Television on Monday.

"Many times every city is working so hard... to build the infrastructure, they can’t think about the environment, they can’t think about the economy, they can’t think about the health of their people."

"In the last six weeks I have been excited about a decade, 10 years to think about that, to re-imagine that and to deliver that."

LA, which initially wanted the 2024 Games, unexpectedly got the 2028 Olympics as the IOC changed the bidding process in mid-race this year after several cities pulled out, scared off by the size and cost of the world's biggest multi-sports event.

The IOC in July decided to award the next two editions to the two cities left in the 2024 race, with Paris getting the 2024 edition and LA the Games four years later.

The IOC had said it did not want to create any "losers" in this process.

IOC president Thomas Bach will visit LA at the end of the week, four days after the IOC session in Lima ratifies the decisions for 2024 and 2028 on Wednesday.