| Chapel Hill to Montalegre | 3,743.36 mi (6,024.36 km) |
| Chapel Hill to Montemor-o-Novo | 3,797.08 mi (6,110.80 km) |
| Chapel Hill to Montemor-o-Velho | 3,737.36 mi (6,014.71 km) |
| Chapel Hill to Montijo | 3,761.79 mi (6,054.01 km) |
| Chapel Hill to Mortagua | 3,753.48 mi (6,040.65 km) |
| Chapel Hill to Moura | 3,848.71 mi (6,193.89 km) |
| Chapel Hill to Murtosa | 3,726.77 mi (5,997.66 km) |
| Chapel Hill to Nazare | 3,731.49 mi (6,005.26 km) |
| Chapel Hill to Nelas | 3,770.49 mi (6,068.02 km) |
| Chapel Hill to Obidos | 3,732.63 mi (6,007.09 km) |
| Chapel Hill to Odemira | 3,802.57 mi (6,119.64 km) |
| Chapel Hill to Odivelas | 3,745.08 mi (6,027.12 km) |
| Chapel Hill to Oeiras | 3,740.74 mi (6,020.13 km) |
| Chapel Hill to Olhao | 3,857.28 mi (6,207.70 km) |
| Chapel Hill to Oliveira de Azemeis | 3,732.15 mi (6,006.32 km) |
