Mayapan was a Maya city . It is about 100 km away from Chichen Itza . Mayapan ( MÃ ayapÃ an in Modern Maya ) , ( in Spanish MayapÃ n ) is a Pre-Columbian Maya site a couple of kilometers south of the town of Telchaquillo in Municipality of Tecoh , approximately 40 km south-east of MÃ rida and 100 km west of Chichen Itza ; in the state of YucatÃ n , Mexico .