| Waltham to Montgomeryville (Pennsylvania) | 254.67 mi (409.85 km) |
| Waltham to Monticello (Minnesota) | 1,138.02 mi (1,831.46 km) |
| Waltham to Montrose (Colorado) | 1,929.66 mi (3,105.48 km) |
| Waltham to Moody (Alabama) | 1,026.34 mi (1,651.74 km) |
| Waltham to Moore (Oklahoma) | 1,486.18 mi (2,391.78 km) |
| Waltham to Moorestown-Lenola (New Jersey) | 255.87 mi (411.78 km) |
| Waltham to Mooresville (North Carolina) | 696.27 mi (1,120.54 km) |
| Waltham to Moorhead (Minnesota) | 1,285.47 mi (2,068.76 km) |
| Waltham to Moorpark (California) | 2,606.33 mi (4,194.48 km) |
| Waltham to Moraga (California) | 2,666.48 mi (4,291.28 km) |
| Waltham to Moreno Valley (California) | 2,532.47 mi (4,075.62 km) |
| Waltham to Morgan City (Louisiana) | 1,411.61 mi (2,271.77 km) |
| Waltham to Morgan Hill (California) | 2,662.04 mi (4,284.14 km) |
| Waltham to Morganton (North Carolina) | 724.12 mi (1,165.35 km) |
| Waltham to Morgantown (West Virginia) | 491.67 mi (791.27 km) |
