| San Marcos to Malvern (Arkansas) | 1,398.30 mi (2,250.34 km) |
| San Marcos to Manassas (Virginia) | 2,236.07 mi (3,598.61 km) |
| San Marcos to Manassas Park (Virginia) | 2,238.20 mi (3,602.04 km) |
| San Marcos to Manatí (Puerto Rico) | 3,279.38 mi (5,277.65 km) |
| San Marcos to Manchester (Missouri) | 1,534.09 mi (2,468.88 km) |
| San Marcos to Manchester (New Hampshire) | 2,545.55 mi (4,096.67 km) |
| San Marcos to Manchester (Tennessee) | 1,774.92 mi (2,856.46 km) |
| San Marcos to Manchester (Virginia) | 2,238.25 mi (3,602.12 km) |
| San Marcos to Mandan (North Dakota) | 1,275.01 mi (2,051.93 km) |
| San Marcos to Mandeville (Louisiana) | 1,598.11 mi (2,571.91 km) |
| San Marcos to Mango (Florida) | 2,094.82 mi (3,371.29 km) |
| San Marcos to Manhattan (Kansas) | 1,217.94 mi (1,960.08 km) |
| San Marcos to Manhattan (New York) | 2,417.98 mi (3,891.36 km) |
| San Marcos to Manhattan Beach (California) | 87.61 mi (141.00 km) |
| San Marcos to Manitowoc (Wisconsin) | 1,750.49 mi (2,817.15 km) |
