| Billdal to Octeville | 779.62 mi (1,254.68 km) |
| Billdal to Oignies | 609.87 mi (981.50 km) |
| Billdal to Oissel | 721.48 mi (1,161.12 km) |
| Billdal to Olivet | 790.15 mi (1,271.62 km) |
| Billdal to Ollioules | 1,032.39 mi (1,661.47 km) |
| Billdal to Olonne-sur-Mer | 956.23 mi (1,538.91 km) |
| Billdal to Oloron-Sainte-Marie | 1,133.22 mi (1,823.75 km) |
| Billdal to Onet Village | 997.41 mi (1,605.18 km) |
| Billdal to Onnaing | 600.58 mi (966.54 km) |
| Billdal to Orange | 978.24 mi (1,574.32 km) |
| Billdal to Orchies | 603.62 mi (971.44 km) |
| Billdal to Orleans | 787.62 mi (1,267.54 km) |
| Billdal to Orly | 725.94 mi (1,168.29 km) |
| Billdal to Ormesson-sur-Marne | 720.20 mi (1,159.04 km) |
| Billdal to Orsay | 733.29 mi (1,180.11 km) |
