| Waltham to Merriam (Kansas) | 1,246.04 mi (2,005.31 km) |
| Waltham to Merrick (New York) | 169.41 mi (272.64 km) |
| Waltham to Merrifield (Virginia) | 397.32 mi (639.43 km) |
| Waltham to Merrillville (Indiana) | 827.59 mi (1,331.87 km) |
| Waltham to Merritt Island (Florida) | 1,106.46 mi (1,780.68 km) |
| Waltham to Mesa (Arizona) | 2,269.22 mi (3,651.96 km) |
| Waltham to Mesquite (Nevada) | 2,291.13 mi (3,687.21 km) |
| Waltham to Mesquite (Texas) | 1,531.13 mi (2,464.11 km) |
| Waltham to Metairie (Louisiana) | 1,353.85 mi (2,178.81 km) |
| Waltham to Methuen Town (Massachusetts) | 24.00 mi (38.62 km) |
| Waltham to Metuchen (New Jersey) | 205.84 mi (331.27 km) |
| Waltham to Mexico (Missouri) | 1,099.23 mi (1,769.04 km) |
| Waltham to Miami (Florida) | 1,255.00 mi (2,019.73 km) |
| Waltham to Miami (Oklahoma) | 1,308.51 mi (2,105.85 km) |
| Waltham to Miami Beach (Florida) | 1,251.26 mi (2,013.71 km) |
