Marianów Sierakowski [maˈrjanuf ɕɛraˈkɔfski] is a village in the administrative district of Gmina Gostynin, within Gostynin County, Masovian Voivodeship, in east-central Poland.

[1] It lies approximately 8 kilometres (5 mi) south-west of Gostynin and 110 km (68 mi) west of Warsaw.

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