Pakaymayu is one of the camps along the Inca Trail at 3500 meters and this is also the name of the Pakaymayu Valley.
The Pakaymayu or Paqaymayu (Quechua, hispanicized spellings Pacaymayo, Pacaymayu, also Pacamayo) is a river located in the Machupicchu District. It is a left tributary of the Willkanuta (Vilcanota) River.
The Pakaymayu originates in the Willkapampa mountain range northeast of Sallqantay (Salkantay) and north of P'allqay (Paljay) near the Warmi Wañusqa pass, the archaeological site of Runkuraqay and the Runkuraqay pass. Its direction is mainly to the northeast, almost parallel to the Kusichaka River east of it. The confluence with the Willkanuta River is west of the village of Pampa Q'awa (Pampacahua).