Turkey's YHT High-Speed Trains from Ankara, Eskişehir and Konya arrive at Istanbul's Pendik YHT Gar (High-Speed Train Station) on the Asian side of the Bosphorus near Sabiha Gökçen Airport (map).
In the future, the terminus for high-speed trains will be closer to the city center, but that may not happen for years. Right now, public transport to and from the Pendik YHT Gar is limited to buses, private transfers, and taxis.
Here are your local transport choices to travel between the Pendik YHT Gar, the city center, and Istanbul's airports:
Pendik YHT Gar to Kadıköy
Walk from the Pendik YHT Gar south along Gazipaşa Caddesi (map) toward the sea and the İDO İskelesi (İDO Ferry Dock: ask anyone) to the İETT bus stop at the ferry dock. E-9 buses traveling from left (east) to right (west) will take you to Kadıköy, from where you can take a ferry to Eminönü.
Follow the instructions above to reach Kadıköy, take a ferry to Eminönü, then the Bağcılar-Kabataş tram toward Bağcılar to reach your destination in Old Istanbul.
Pendik YHT Gar to Beyoğlu
Follow the instructions above to reach Kadıköy, then take a ferry to Karaköy and take the Tünel up to İstiklal Caddesi, or the Bağcılar-Kabataş tram toward Kabataş, then the Füniküler to reach Taksim Square.
An alternative, probably faster and certainly more comfortable (though you do miss the cross-Bosphorus ferry voyage), is to follow the instructions below to go to Sabiha Gökçen Airport, then take the Havataş Airport Bus to Taksim Square.
Follow the instructions above to reach the İDO Iskelesi bus stop, cross the boulevard to the bus stop right near the İDO ferry dock and take the E-9 bus going east to reach the airport.
IETT city buses depart from outside the Arrivals level of the airport terminal. Buy tickets or an Istanbulkart transit pass from the kiosk near the buses.
IETT Bus E-9: Take the E-9 bus and get out at the Pendik İDO (PEHN-deek EE-doh) stop, the one for the İDO ferryboats to Yalova. The ride takes about 20 minutes.
From the Pendik İDO bus stop, walk inland through the parking lots and to the right of the small Police Station, then continue inland along Gazipaşa Caddesi to the Pendik YHT Gar, a 10-minute walk.
IETT Bus KM20: The KM20 bus from Sabiha Gökçen Airport also takes you near the Pendik YHT Station, but it runs only every 50 minutes (9 buses daily). The YHT Gar stop for the KM20 bus is on Abdülhak Renda Caddesi on the north side of the station (map).
The fastest and most comfortable way to travel between the Pendik YHT Gar and Atatürk Airport is to follow the instructions to go to Sabiha Gökçen Airport, and from there take the Havataş Airport Bus to Atatürk Airport. More...
Walk south from the Pendik YHT Gar along Gazipaşa Caddesi to the İDO İskelesi (ferry dock) to board a ferry to Yalova on the southern shore of the Sea of Marmara. More...
From Yalova, buses leave frequently for Bursa. More...
—by Tom Brosnahan