| Billings to Octeville | 4,525.61 mi (7,283.26 km) |
| Billings to Oignies | 4,633.07 mi (7,456.21 km) |
| Billings to Oissel | 4,627.99 mi (7,448.03 km) |
| Billings to Olivet | 4,726.28 mi (7,606.21 km) |
| Billings to Ollioules | 5,095.23 mi (8,199.99 km) |
| Billings to Olonne-sur-Mer | 4,667.73 mi (7,511.99 km) |
| Billings to Oloron-Sainte-Marie | 4,870.35 mi (7,838.07 km) |
| Billings to Onet Village | 4,923.21 mi (7,923.15 km) |
| Billings to Onnaing | 4,655.76 mi (7,492.72 km) |
| Billings to Orange | 5,009.21 mi (8,061.55 km) |
| Billings to Orchies | 4,640.56 mi (7,468.25 km) |
| Billings to Orleans | 4,724.66 mi (7,603.60 km) |
| Billings to Orly | 4,698.90 mi (7,562.15 km) |
| Billings to Ormesson-sur-Marne | 4,701.49 mi (7,566.31 km) |
| Billings to Orsay | 4,694.57 mi (7,555.18 km) |
