Distance from San Diego, CA to San Marcos, CA is 35Miles or 57 Km. You can get this distance about 39 mins. If you want to planning travel with plane for 30 Miles or 48 Km, You can get this distance about 33 mins .
A car with an average MPG will needs 1.62 gallons of gas to get the route between these points.
The estimated cost of gas to get between San Diego, CA and San Marcos, CA is $3.68.
During the route, an average car will release 31.74 pounds of CO2 to the atmosphere. Your carbon footprint is 0.91 pounds of CO2 per mile.
* Average US MPG used for calculations is 21.6 MPG.
* Average US gas price used for calculation is 2.27 per gallon.