| Olbia to McKeesport (Pennsylvania) | 4,456.21 mi (7,171.58 km) |
| Olbia to McKinleyville (California) | 6,076.82 mi (9,779.70 km) |
| Olbia to McKinney (Texas) | 5,491.48 mi (8,837.69 km) |
| Olbia to McLean (Virginia) | 4,390.20 mi (7,065.35 km) |
| Olbia to McMinnville (Oregon) | 5,806.50 mi (9,344.66 km) |
| Olbia to McMinnville (Tennessee) | 4,905.59 mi (7,894.78 km) |
| Olbia to McNair (Virginia) | 4,399.75 mi (7,080.71 km) |
| Olbia to McPherson (Kansas) | 5,292.45 mi (8,517.38 km) |
| Olbia to Mead Valley (California) | 6,262.77 mi (10,078.96 km) |
| Olbia to Meadow Woods (Florida) | 5,006.44 mi (8,057.09 km) |
| Olbia to Meadowbrook (Virginia) | 4,459.82 mi (7,177.39 km) |
| Olbia to Meadville (Pennsylvania) | 4,420.38 mi (7,113.91 km) |
| Olbia to Mebane (North Carolina) | 4,594.34 mi (7,393.87 km) |
| Olbia to Mechanicsville (Virginia) | 4,446.99 mi (7,156.73 km) |
| Olbia to Medford (Massachusetts) | 3,993.66 mi (6,427.18 km) |
