| Grass Valley to Montalegre | 5,446.75 mi (8,765.69 km) |
| Grass Valley to Montemor-o-Novo | 5,581.67 mi (8,982.84 km) |
| Grass Valley to Montemor-o-Velho | 5,491.52 mi (8,837.75 km) |
| Grass Valley to Montijo | 5,553.35 mi (8,937.25 km) |
| Grass Valley to Mortagua | 5,496.13 mi (8,845.16 km) |
| Grass Valley to Moura | 5,636.35 mi (9,070.82 km) |
| Grass Valley to Murtosa | 5,466.64 mi (8,797.70 km) |
| Grass Valley to Nazare | 5,503.48 mi (8,856.99 km) |
| Grass Valley to Nelas | 5,506.76 mi (8,862.28 km) |
| Grass Valley to Obidos | 5,511.35 mi (8,869.65 km) |
| Grass Valley to Odemira | 5,616.13 mi (9,038.29 km) |
| Grass Valley to Odivelas | 5,537.30 mi (8,911.42 km) |
| Grass Valley to Oeiras | 5,536.96 mi (8,910.88 km) |
| Grass Valley to Olhao | 5,674.21 mi (9,131.75 km) |
| Grass Valley to Oliveira de Azemeis | 5,467.62 mi (8,799.29 km) |
