| Castel Gandolfo to Monticello (Minnesota) | 4,909.49 mi (7,901.06 km) |
| Castel Gandolfo to Montrose (Colorado) | 5,751.61 mi (9,256.33 km) |
| Castel Gandolfo to Moody (Alabama) | 5,137.52 mi (8,268.04 km) |
| Castel Gandolfo to Moore (Oklahoma) | 5,519.70 mi (8,883.09 km) |
| Castel Gandolfo to Moorestown-Lenola (New Jersey) | 4,364.05 mi (7,023.25 km) |
| Castel Gandolfo to Mooresville (North Carolina) | 4,800.15 mi (7,725.09 km) |
| Castel Gandolfo to Moorhead (Minnesota) | 4,943.55 mi (7,955.88 km) |
| Castel Gandolfo to Moorpark (California) | 6,351.50 mi (10,221.76 km) |
| Castel Gandolfo to Moraga (California) | 6,244.00 mi (10,048.74 km) |
| Castel Gandolfo to Moreno Valley (California) | 6,317.96 mi (10,167.78 km) |
| Castel Gandolfo to Morgan City (Louisiana) | 5,522.54 mi (8,887.67 km) |
| Castel Gandolfo to Morgan Hill (California) | 6,271.61 mi (10,093.18 km) |
| Castel Gandolfo to Morganton (North Carolina) | 4,832.50 mi (7,777.16 km) |
| Castel Gandolfo to Morgantown (West Virginia) | 4,594.83 mi (7,394.67 km) |
| Castel Gandolfo to Morris (Illinois) | 4,876.60 mi (7,848.12 km) |
