San Marcos is the 'spiritual heaven'! There are enough yoga retreats and spiritual centers to fulfill anyones spiritual needs. San Marcos is the perfect location for pure bliss and relaxation. Majority of the activities are based around relaxation and connection with your spiritual self. It has a very laid back feel and culture with no obvious worries. It has been described as a place that "takes life as it comes".
There is still a very strong and authentic Mayan culture in existence within the town of San Marcos. Their culture is best known for its bright colors in its clothing, artwork and food.
San Marcos is also great for outdoor adventure. Because of the lake there is a very rich ecological reservation of many endangered species. The lake also provides direct pleasure with swimming, sailing, kayaking, and even cliff jumping. The most popular cliff jumping site is a ten minute walk from the center of San Marcos. If you are an adventurous type, there is a lot of hiking up and down volcanos, enjoying beautiful scenery of the lake from a high point and also great bird watching. Scuba is also available if you are feeling adventuresome.
This is a great place for some who is interested in cooking tourism. A new emerging type of tourism that focusing on chefs or food lovers traveling around to find the freshest produce and cooking up delicious feasts with the use of only local items. San Marcos and the surrounding towns have many open air markets or mercados that provide fresh fruits and vegetables of all kind to the locals and tourists. The best market that I visited was the Microdyn, it had the freshest produce for the best price.
Yoga
Many places run early morning yoga programs, that are of minimal cost or free. hatha dominates here.
Rock Jumping
There are a series of rocks that can be accessed by foot via the shore of the lake. from there, its a long way down to the water. what fun! swiping of wallets, cameras, and pants have been known to occur, so come with minimal items. to the right from the jumping platforms foreigners usually go skinny dipping. this seems to have been accepted by the local community.