The newly-elected President made the promise to Patrick Baumann, chairman of the IOC Evaluation Commission, at the end of an hour-long breakfast meeting with the team of inspectors here in the French capital to report on the city's bid to stage the Olympic and Paralympic Games for the first time in a century. 

He pledged to travel to Lausanne for the IOC Candidate City Technical Briefing on July 11 and 12.

Macron, at 39 the youngest President in France's history, is also expected to go to Lima for the IOC Session, where the Games are due to be awarded, two months later.

"Emmanuel Macron told Patrick Baumann that he would definitely be in Lausanne for the IOC's debriefing and also in Lima on September 13," Guy Drut, France's International Olympic Committee member, who attended the meeting, said.

Los Angeles is Paris' only rival. 

It is not yet known whether new United States President Donald Trump will attend either the event in Lausanne or Lima. 

But, during a telephone conversation with IOC President Thomas Bach following his election last November, Trump did express a willingness to travel to the Peruvian capital to support Los Angeles 2024. 

The importance that Macron appears to attach to the bid was illustrated by the fact that meeting the IOC Evaluation Commission was his first official appointment in the Élysée Palace, the official residence of the French President, after being officially inaugurated on Sunday (May 16). 

After the breakfast, Macron joined Paris Mayor Anne Hidalgo and leading officials from the campaign, including co-chairmen Tony Estanguet and Bernard Lapasset, in making the bid's symbol as they posed alongside members of the IOC Evaluation Commission. 

Macron's very public show of support put an end to claims that he may not be as enthusiastic about Paris 2024 as his predecessor François Hollande.

"This is evidence of commitment," said Lapasset. 

"It is not just a word, there is a unity up to the highest level of the State. 

"This could help our candidacy for sure - the new President, who receives the Commission just two days after his nomination, and who is the same age as our co-president Tony Estanguet."

It is not unusual for a head of state to attend the final vote to support their country's bid but it is unprecedented for them to travel for the IOC Technical Briefing.

The event, however, is normally attended by many IOC members and is seen as a vital event in determining where the Olympic and Paralympics are eventually awarded. 

"Mr Macron is in the continuity of Mr Hollande in that he is personally involved in the bid," said Estanguet. 

"It is a very, very strong gesture that shows the unity and strength of Paris 2024."

This year's Briefing will have extra significance as it is expected that a proposal will be put forward by IOC President Thomas Bach to award both the 2024 and 2028 Olympics together.

Once that is confirmed there is expected to be high-level negotiations between the IOC, Los Angeles and Paris to determine in which order they will be staged. 

Macron will be hoping he is more successful than the last French President to attend the IOC Session on behalf of a bid from Paris.

Jacques Chirac was partly blamed for helping the city lose its campaign for the 2012 Olympic and Paralympic Games to London following an ill-advised remark about Finnish food. 

It not only upset the two IOC members from Finland but also led to a public row at an IOC reception with then British Prime Minister Tony Blair's wife Cherie, who was there on behalf of London 2012, on the eve of the vote in Singapore. 

According to London 2012 chairman Sebastian Coe, Chirac was so angry he left the event without talking to any IOC members, who he had been there to meet.

The next day London beat Paris by four votes.