There are 3 routes to Guatemala. This roadlog has all 3.
You will also need the roadlog to Yucatan no matter which border you cross at. See "RELATED tab above.
Since Guatemala-bound travelers seldom stop at Mexico attractions, few are listed.
Hotels / RV parks in San Cristobal ARE.
Maps cover routes:
1: Toll road near Coatzacoalcos
2: Acayucan to La Ventosa
3. Route to Tapachula / Tecun Uman
4. Route to Cd. Cuauhtémoc / La Mesilla.
For your purient interests, an article on the Tehuantepec women is included.
Commonly thought of as the only way to get to Yucatan. It is shorter than the Laredo route, but roads not as good. Very few tolls, though. No trolls either.
Saves a few hours for anyone from East or Central Canada or USA over Brownsville / Matamoros. Scenic. Some considr it less safe, however.