İzmit is a big and a heavily industrialized city city in Marmara Region, Turkey, located east of Istanbul, at the very tip of long and narrow Gulf of İzmit, that long indentation of the Sea of Marmara towards east. İzmit is the capital of Kocaeli Province.
Several daily regional expresses connect İzmit with nearby Istanbul. The average price is about YTL 5.50/person. You can also book and buy a seat for long distance trains that leave Istanbul’s Asian station for other (Asian) destinations. The cheapest ticket for such a train is YTL 3.75/person, the rate for Doğu Express. The journey takes about 2 hours between Istanbul and İzmit by rail.
Both highways numbered D100 and O-4/E80 (toll-way) which connect Istanbul and Ankara, two biggest cities of Turkey, pass through or by the city. A drive from Istanbul should take no more than one hour, especially on the O-4/E80 which is of a better quality and avoids towns which D100 traverses all the way along.
Telephone code of İzmit is 262 (+90 262 when calling from out of Turkey).