Guatemala Ventures/Mayan Bike Tours

This outfit offers volcano ascents and mountain bike tours. Volcano ascents take you to Agua, and for those a bit more adventurous they offer hike-and-bike tours to Pacaya volcano. They also offer some interesting cloud-forest, bird-watching and ridge-hiking options. You can rent out good mountain bikes here too (by the hour or by the day) and there are some tasty bike tours, from intermediate to expert levels, on offer.

This outfit also does bike-and-kayak trips to Lago de Atitlán and Monterrico (both two days). Another, lazier option is its trip up Cerro Alto in a minibus with a coast back down on mountain bike.