| Manassas to Montalegre | 3,575.65 mi (5,754.46 km) |
| Manassas to Montemor-o-Novo | 3,638.50 mi (5,855.60 km) |
| Manassas to Montemor-o-Velho | 3,574.90 mi (5,753.25 km) |
| Manassas to Montijo | 3,603.73 mi (5,799.65 km) |
| Manassas to Mortagua | 3,589.91 mi (5,777.40 km) |
| Manassas to Moura | 3,690.89 mi (5,939.91 km) |
| Manassas to Murtosa | 3,562.69 mi (5,733.59 km) |
| Manassas to Nazare | 3,570.96 mi (5,746.90 km) |
| Manassas to Nelas | 3,606.38 mi (5,803.91 km) |
| Manassas to Obidos | 3,572.86 mi (5,749.97 km) |
| Manassas to Odemira | 3,647.44 mi (5,869.99 km) |
| Manassas to Odivelas | 3,586.97 mi (5,772.67 km) |
| Manassas to Oeiras | 3,583.06 mi (5,766.37 km) |
| Manassas to Olhao | 3,702.99 mi (5,959.39 km) |
| Manassas to Oliveira de Azemeis | 3,567.64 mi (5,741.57 km) |
