the town of Kstovo is 22 km southeast of a city that is the capital of which federal district ?
Kstovo Kstovo (Russian: Ксто́во ) is a town and the administrative center of Kstovsky District in Nizhny Novgorod Oblast, Russia, located on the right bank of the Volga River, 22 km southeast of Nizhny Novgorod, the administrative center of the oblast. Population:  (2010 Census) ;  (2002 Census) ;  (1989 Census)
Federal capital A federal capital is a political entity, often a municipality or capital city, that enjoys status as a seat of government in a federal state. A federal capital is typically a city that physically encompasses the offices and meeting places of its respective government, where its location and relationship to subnational states are fixed by law or federal constitution. Federal capitals may or may not be considered states in themselves, and either exercise significant political autonomy from the federation or are directly ruled by the national government located within their premises, as federal districts.