Chapultepec Cuernavaca

Chapultepec park is located in the city of Cuernavaca, Mexico.  It used to be zoo and it's now a park.  Many people go there early morning to take walks or jog.  If you arrive at the park between 6:00 and 9:30 a.m. the cost to enter the park is $2 mexican pesos, very inexpensive (Price goes up after that time).  If you're ever in the city of Cuernavaca this one of the best places to exercise in the morning. Here's the link to park's webpage, spanish only.