In Mayan Altiplano, the volcanic caldera surrounding Lago de Atitlan provides a scenic and challenging area for mountain biking. The area is laced with snaking campesino trails which offer stunning views over the lake.
The routes start from the Panamerican Highway that is about 2,500 feet vertical above the lake. Try starting from the cornfields just outside of Los Encuentros and generally follows the unsigned trails downhill to the lakeshore.
Overall, Lago de Atitlan is the 1st most popular mountain bike trail of all 4 mountain biking rides in Guatemala.