| Somerville to Montalegre | 3,166.59 mi (5,096.13 km) |
| Somerville to Montemor-o-Novo | 3,236.73 mi (5,209.01 km) |
| Somerville to Montemor-o-Velho | 3,169.92 mi (5,101.49 km) |
| Somerville to Montijo | 3,202.48 mi (5,153.90 km) |
| Somerville to Mortagua | 3,184.00 mi (5,124.15 km) |
| Somerville to Moura | 3,289.70 mi (5,294.26 km) |
| Somerville to Murtosa | 3,156.40 mi (5,079.74 km) |
| Somerville to Nazare | 3,167.59 mi (5,097.75 km) |
| Somerville to Nelas | 3,200.02 mi (5,149.93 km) |
| Somerville to Obidos | 3,170.16 mi (5,101.88 km) |
| Somerville to Odemira | 3,248.79 mi (5,228.42 km) |
| Somerville to Odivelas | 3,185.70 mi (5,126.88 km) |
| Somerville to Oeiras | 3,182.18 mi (5,121.22 km) |
| Somerville to Olhao | 3,305.02 mi (5,318.91 km) |
| Somerville to Oliveira de Azemeis | 3,161.02 mi (5,087.17 km) |
