| Olbia to Monticello (Minnesota) | 4,831.30 mi (7,775.22 km) |
| Olbia to Montrose (Colorado) | 5,680.14 mi (9,141.31 km) |
| Olbia to Moody (Alabama) | 5,025.94 mi (8,088.47 km) |
| Olbia to Moore (Oklahoma) | 5,426.32 mi (8,732.82 km) |
| Olbia to Moorestown-Lenola (New Jersey) | 4,251.88 mi (6,842.75 km) |
| Olbia to Mooresville (North Carolina) | 4,685.46 mi (7,540.52 km) |
| Olbia to Moorhead (Minnesota) | 4,872.64 mi (7,841.75 km) |
| Olbia to Moorpark (California) | 6,292.28 mi (10,126.45 km) |
| Olbia to Moraga (California) | 6,196.77 mi (9,972.74 km) |
| Olbia to Moreno Valley (California) | 6,254.96 mi (10,066.38 km) |
| Olbia to Morgan City (Louisiana) | 5,410.07 mi (8,706.66 km) |
| Olbia to Morgan Hill (California) | 6,222.32 mi (10,013.86 km) |
| Olbia to Morganton (North Carolina) | 4,719.15 mi (7,594.74 km) |
| Olbia to Morgantown (West Virginia) | 4,487.44 mi (7,221.84 km) |
| Olbia to Morris (Illinois) | 4,783.05 mi (7,697.58 km) |
