| San Marcos to Bay City (Michigan) | 1,926.60 mi (3,100.56 km) |
| San Marcos to Bay City (Texas) | 1,285.52 mi (2,068.84 km) |
| San Marcos to Bay Point (California) | 432.15 mi (695.48 km) |
| San Marcos to Bay Shore (New York) | 2,455.59 mi (3,951.89 km) |
| San Marcos to Bay Village (Ohio) | 2,005.31 mi (3,227.23 km) |
| San Marcos to Bayamón (Puerto Rico) | 3,299.37 mi (5,309.82 km) |
| San Marcos to Bayonet Point (Florida) | 2,065.83 mi (3,324.63 km) |
| San Marcos to Bayonne (New Jersey) | 2,410.37 mi (3,879.11 km) |
| San Marcos to Bayou Blue (Louisiana) | 1,577.45 mi (2,538.66 km) |
| San Marcos to Bayou Cane (Louisiana) | 1,573.14 mi (2,531.72 km) |
| San Marcos to Bayshore Gardens (Florida) | 2,091.57 mi (3,366.06 km) |
| San Marcos to Baytown (Texas) | 1,327.02 mi (2,135.63 km) |
| San Marcos to Beach Park (Illinois) | 1,714.05 mi (2,758.50 km) |
| San Marcos to Beachwood (New Jersey) | 2,407.68 mi (3,874.79 km) |
| San Marcos to Beachwood (Ohio) | 2,027.36 mi (3,262.72 km) |
