The 49th IChO was held in Thailand,
Nakhon Pathom, July 6 – 15, 2017
Previous IChO’s
The 48th IChO was held in Georgia,
Tbilisi, July 23-Aug 1, 2016
The 47th IChO was held in Azerbaijan,
Baku, July 20–29, 2015
The 46th IChO was held in Vietnam,
Hanoi, July 20–29, 2014
The 45th IChO was held in Russia,
Moscow, July 15–24, 2013