Walking in San Marcos is most enjoyable in the downtown area and along designated trails. However, the city is generally car-dependent, with limited pedestrian infrastructure in many neighborhoods. While walking can be a pleasant way to explore certain areas, the hot Texas summers and lack of shade in some parts may make it less comfortable during peak temperatures. Distances between key locations can also be a factor, as some destinations may be spread out. Overall, walking is best suited for specific areas rather than as a primary mode of transportation across the city.

Biciklizam u San Marcosu podupire kombinacija biciklističkih staza, dijeljenih staza i staza za parkove, što je čini praktičnim načinom navigacije određenim područjima. Grad ima više od 160 milja biciklističke infrastrukture koja povezuje razna odredišta. Međutim, u nekim područjima može biti potreban oprez zbog prometa ili ograničenih ruta prilagođenih biciklima. Teren je općenito upravljiv, ali udaljenosti između ključnih lokacija mogu varirati. Na uvjete vožnje biciklom utječu vrijeme koje može biti vruće i vlažno, stoga su hidracija i zaštita od sunca važni.

Public transit in San Marcos includes bus services that connect various parts of the city and surrounding areas. The local bus system offers routes that are accessible and convenient for getting around town. Additionally, the Bobcat Shuttle provides free rides to students and the general public, with designated stops throughout the city. While buses are a practical option for many destinations, their schedules and routes may require planning ahead. The city’s infrastructure supports these services, making public transit a useful choice for navigating San Marcos efficiently.