The Valdai Hills (Russian: Валда́йская возвы́шенность, romanized: Valdáyskaya vozvýshennost'), sometimes referred to as just Valdai (Russian: Валда́й, romanized: Valdáy), are an upland region in the north-west of central European Russia running north–south, about midway between Saint Petersburg and Moscow, spanning the Leningrad, Novgorod, Tver, Pskov, and Smolensk Oblasts.