That would be the Popocatepetl Volcano
http://en.wikipedia.org/wiki/Popocatepetl
closest mountain
The southernmost city (and thus the closest city to the equator) in Mexico is Tapachula, Chiapas.
Mexico City itself contains several landmarks, such as the Independence Monument, the hill, park and castle of Chapultepec or the Ajusco mountain range, located south of the city but within the city proper.
Two of them would be the Ajusco mountain, just south of Mexico City, or the Popocatepetl volcano, some 70 kilometers (43 miles) southeast of the city.
The city of Toluca (pop: 1,610,786) is 56 kilometers (35 miles) east of Mexico City.
San Diego Padres
Mexico City is the capital of Mexico. The closest river tat is located nearest to Mexico City is called the Rio Grand River.
No Mexican city is near Florida. Mexico is on the Gulf of Mexico and on the Gulf you will find New Orleans, and Corpus Cristi Texas as the nearest to Mexico. Florida is closest to Havana Cuba.
monterray
Popocatepetl is 43 miles from Mexico City. -E
The city of Acapulco (16°51'59''N 99°52'57''W) is the closest beach resort, some 411 Kilometers (256 miles) south of Mexico City. However, the closest beach to Mexico City is Tecolutla in the state of Veracruz, 340 Kilometers (212 miles) northwest of the city.
The major city closest to this point is Mexico City, Mexico.