| Ashtabula to Montalegre | 3,634.59 mi (5,849.30 km) |
| Ashtabula to Montemor-o-Novo | 3,715.27 mi (5,979.14 km) |
| Ashtabula to Montemor-o-Velho | 3,644.51 mi (5,865.27 km) |
| Ashtabula to Montijo | 3,681.68 mi (5,925.09 km) |
| Ashtabula to Mortagua | 3,657.22 mi (5,885.73 km) |
| Ashtabula to Moura | 3,768.81 mi (6,065.31 km) |
| Ashtabula to Murtosa | 3,629.13 mi (5,840.51 km) |
| Ashtabula to Nazare | 3,644.34 mi (5,865.01 km) |
| Ashtabula to Nelas | 3,672.52 mi (5,910.35 km) |
| Ashtabula to Obidos | 3,647.73 mi (5,870.45 km) |
| Ashtabula to Odemira | 3,730.60 mi (6,003.82 km) |
| Ashtabula to Odivelas | 3,664.90 mi (5,898.08 km) |
| Ashtabula to Oeiras | 3,661.82 mi (5,893.14 km) |
| Ashtabula to Olhao | 3,787.38 mi (6,095.19 km) |
| Ashtabula to Oliveira de Azemeis | 3,633.21 mi (5,847.08 km) |
