Istanbul is in the race with Tokyo, Doha, Madrid and Baku for the right to host the 2020 Olympics.
Istanbul has submitted its 2020 Olympic bid file to the IOC, completing the field of five candidate cities.
The Istanbul delegation delivered it documents to the International Olympic Committee on Wednesday, the deadline for formal bid submissions.
Submitting their files on Monday and Tuesday were Tokyo; Doha, Qatar; Madrid; and Baku, Azerbaijan.
Rome dropped out Tuesday when Premier Mario Monti said the government would not offer financial support at a time of economic crisis in Italy.
Istanbul is bidding for a fifth time after failed attempts for the Olympics of 2000, 2004, 2008 and 2012.
Senior bid official Hasan Arat says “this is a new concept, this is a new Turkey.” The IOC will select the 2020 host city in September 2013.
Istanbul is very hopeful after Italy’s Rome pulled out of the race. Turkey’s submission comes on the final day for application files and guarantee letters to be submitted to the International Olympic Committee.
The IOC executive board in Quebec City will decide which cities are approved as official candidate cities in May.