| San Marino to Wanaque (New Jersey) | 2,420.59 mi (3,895.57 km) |
| San Marino to Wantagh (New York) | 2,462.87 mi (3,963.61 km) |
| San Marino to Warner Robins (Georgia) | 1,982.08 mi (3,189.85 km) |
| San Marino to Warr Acres (Oklahoma) | 1,164.39 mi (1,873.91 km) |
| San Marino to Warren (Michigan) | 1,972.39 mi (3,174.26 km) |
| San Marino to Warren (Ohio) | 2,080.87 mi (3,348.84 km) |
| San Marino to Warrensburg (Missouri) | 1,388.39 mi (2,234.40 km) |
| San Marino to Warrensville Heights (Ohio) | 2,044.76 mi (3,290.72 km) |
| San Marino to Warrenville (Illinois) | 1,704.57 mi (2,743.24 km) |
| San Marino to Warrington (Florida) | 1,812.29 mi (2,916.60 km) |
| San Marino to Warsaw (Indiana) | 1,820.07 mi (2,929.12 km) |
| San Marino to Warwick (Rhode Island) | 2,565.65 mi (4,129.01 km) |
| San Marino to Wasco (California) | 124.05 mi (199.64 km) |
| San Marino to Washington (District of Columbia) | 2,286.53 mi (3,679.81 km) |
| San Marino to Washington (Illinois) | 1,630.06 mi (2,623.32 km) |
