| Amarillo to Octeville | 4,821.85 mi (7,760.02 km) |
| Amarillo to Oignies | 4,964.41 mi (7,989.45 km) |
| Amarillo to Oissel | 4,936.43 mi (7,944.42 km) |
| Amarillo to Olivet | 5,023.40 mi (8,084.39 km) |
| Amarillo to Ollioules | 5,368.43 mi (8,639.65 km) |
| Amarillo to Olonne-sur-Mer | 4,928.15 mi (7,931.09 km) |
| Amarillo to Oloron-Sainte-Marie | 5,100.82 mi (8,208.98 km) |
| Amarillo to Onet Village | 5,187.34 mi (8,348.21 km) |
| Amarillo to Onnaing | 4,989.62 mi (8,030.02 km) |
| Amarillo to Orange | 5,285.57 mi (8,506.30 km) |
| Amarillo to Orchies | 4,973.35 mi (8,003.84 km) |
| Amarillo to Orleans | 5,022.25 mi (8,082.52 km) |
| Amarillo to Orly | 5,008.38 mi (8,060.21 km) |
| Amarillo to Ormesson-sur-Marne | 5,012.27 mi (8,066.46 km) |
| Amarillo to Orsay | 5,002.36 mi (8,050.52 km) |
