| Pittsburg to Montalegre | 5,538.35 mi (8,913.11 km) |
| Pittsburg to Montemor-o-Novo | 5,672.06 mi (9,128.30 km) |
| Pittsburg to Montemor-o-Velho | 5,582.34 mi (8,983.91 km) |
| Pittsburg to Montijo | 5,643.56 mi (9,082.43 km) |
| Pittsburg to Mortagua | 5,587.15 mi (8,991.66 km) |
| Pittsburg to Moura | 5,726.75 mi (9,216.32 km) |
| Pittsburg to Murtosa | 5,557.67 mi (8,944.20 km) |
| Pittsburg to Nazare | 5,593.99 mi (9,002.65 km) |
| Pittsburg to Nelas | 5,597.91 mi (9,008.97 km) |
| Pittsburg to Obidos | 5,601.74 mi (9,015.13 km) |
| Pittsburg to Odemira | 5,705.99 mi (9,182.90 km) |
| Pittsburg to Odivelas | 5,627.47 mi (9,056.54 km) |
| Pittsburg to Oeiras | 5,627.05 mi (9,055.87 km) |
| Pittsburg to Olhao | 5,764.08 mi (9,276.40 km) |
| Pittsburg to Oliveira de Azemeis | 5,558.73 mi (8,945.91 km) |
