| San Marcos to National City (California) | 32.74 mi (52.70 km) |
| San Marcos to Naugatuck (Connecticut) | 2,464.44 mi (3,966.13 km) |
| San Marcos to Navarre (Florida) | 1,782.47 mi (2,868.61 km) |
| San Marcos to Nederland (Texas) | 1,378.87 mi (2,219.08 km) |
| San Marcos to Neenah (Wisconsin) | 1,713.88 mi (2,758.22 km) |
| San Marcos to Neosho (Missouri) | 1,312.39 mi (2,112.09 km) |
| San Marcos to Nesconset (New York) | 2,460.39 mi (3,959.62 km) |
| San Marcos to New Albany (Indiana) | 1,785.60 mi (2,873.64 km) |
| San Marcos to New Albany (Ohio) | 1,953.69 mi (3,144.16 km) |
| San Marcos to New Baltimore (Michigan) | 1,973.67 mi (3,176.31 km) |
| San Marcos to New Baltimore (Virginia) | 2,223.61 mi (3,578.56 km) |
| San Marcos to New Bedford (Massachusetts) | 2,573.03 mi (4,140.90 km) |
| San Marcos to New Berlin (Wisconsin) | 1,709.13 mi (2,750.58 km) |
| San Marcos to New Bern (North Carolina) | 2,282.51 mi (3,673.34 km) |
| San Marcos to New Braunfels (Texas) | 1,146.88 mi (1,845.72 km) |
