Without taking into consideration branches and secondary deviations, there are several routes identified, that connected the center of Mexico with the Guatemala Pacific Coast, one through [[Puebla]] and the sierra, and the other through the [[Guerrero state]] and the Pacific Ocean coast. Both joined at [[Juchitán de Zaragoza|Juchitán]]. From Juchitán, again, there were two routes to Guatemala, one on the north that lead to MIxco-Kaminaljuyu and the other on the south that lead to Escuintla.<ref name=Icon />
===North Route Tenochtitlan – Juchitán===
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Based on the presence of a ceramic style pottery shaped as pots (Tecomates), found in the Tlapa and Huamuxtitlán, it is known that the region had an early cultural development predating the Olmecs.<ref name=Icon />
A female ceramic figurine from the Huamuxtitlán valley indicates an archaeological occupation of eastern Guerrero State, contemporary to the Chiapas Ocós Phase (1500–1350 BCE);<ref name=C&M >{{cite book|last= Mary E. Pye |first= Clark, John E. |year=2002 |chapter= Re-Visiting the Mixe-Zoque, Slighted Neighbors and Predecessors of the Early Lowland Maya |title=Southern Maya in the Late Preclassic |editor1=M. Love |editor2=R. Rosensweig |publisher=University of Colorado, Boulder |location=Colorado }}</ref> while the appearance of Olmec type figures in [[Marquelia]] at the [[Costa Chica of Guerrero|Costa Chica]], could prove an Olmec transition process, as proposed for [[Mazatán, Chiapas]] during the Cherla and Cuadros Phases (1350–1150 BCE).<ref name=Clark >{{cite journal |last= Clark |first= John E. |year=1990 |title= Olmecas, olmequismo y olmequización en Mesoamérica |trans-title=Olmecs, olmequism and olmequization in Mesoamerica |journal= Arqueología |location= México |language=es |volume=3 |pages=49–56}}</ref> See [http://www.asociaciontikal.com/pdf/54_-_Mary_Pye.pdf Figure 4 of Huamuxtitlán and Figure 5 Marquelia Page 927]
