The candidate cities for the 2020 Olympic summer games, Istanbul, Tokyo and Madrid, present their bids to IOC members at an important meeting in Lausanne, Switzerland this week.

The candidates from Turkey, Japan and Spain will make their technical presentation to the International Olympic Committee (IOC) on July 3 and 4.

An evaluation committee has already visited each city and reported back. Now committee members can question the city delegations about specific aspects of the bids - with technical enquiries about subjects like funding, communications, transport, accommodation and the organisation of the sporting events themselves.

"The evaluation commission has said that each one of the three cities could stage a perfect games, but more important, that each one of the three has put the athletes at the centre of their preoccupations and at the centre of their care," said IOC President Jacques Rogge. "And for me this is very important because we organize games for the athletes".

Rogge explained why the July meeting was so important.

"It is a meeting where the IOC members will ask very precise questions to the bid cities, go in-depth into the different files and get the necessary feedback. But also for the bid cities it is important to evaluate their presentation, and to fine tune it for the final decision."

In just over two months, on September 7, the IOC will meet in session in Buenos Aires, Argentina where they will hear final submissions from the candidate cities and then elect the host city for 2020.

Presented by Adam Justice