| San Mateo to Marrero (Louisiana) | 1,914.28 mi (3,080.74 km) |
| San Mateo to Marshall (Minnesota) | 1,455.13 mi (2,341.80 km) |
| San Mateo to Marshall (Missouri) | 1,574.70 mi (2,534.23 km) |
| San Mateo to Marshall (Texas) | 1,612.80 mi (2,595.55 km) |
| San Mateo to Marshalltown (Iowa) | 1,583.31 mi (2,548.09 km) |
| San Mateo to Marshfield (Wisconsin) | 1,731.17 mi (2,786.04 km) |
| San Mateo to Martha Lake (Washington) | 711.38 mi (1,144.85 km) |
| San Mateo to Martin (Tennessee) | 1,839.84 mi (2,960.94 km) |
| San Mateo to Martinez (California) | 32.64 mi (52.53 km) |
| San Mateo to Martinez (Georgia) | 2,260.84 mi (3,638.48 km) |
| San Mateo to Martinsburg (West Virginia) | 2,376.47 mi (3,824.56 km) |
| San Mateo to Martinsville (Indiana) | 1,932.09 mi (3,109.41 km) |
| San Mateo to Martinsville (New Jersey) | 2,537.72 mi (4,084.07 km) |
| San Mateo to Martinsville (Virginia) | 2,319.30 mi (3,732.55 km) |
| San Mateo to Maryland City (Maryland) | 2,442.88 mi (3,931.44 km) |
