| Guymon to Octeville | 4,733.00 mi (7,617.03 km) |
| Guymon to Oignies | 4,873.24 mi (7,842.72 km) |
| Guymon to Oissel | 4,846.85 mi (7,800.26 km) |
| Guymon to Olivet | 4,934.78 mi (7,941.75 km) |
| Guymon to Ollioules | 5,282.11 mi (8,500.74 km) |
| Guymon to Olonne-sur-Mer | 4,842.18 mi (7,792.74 km) |
| Guymon to Oloron-Sainte-Marie | 5,017.53 mi (8,074.93 km) |
| Guymon to Onet Village | 5,101.47 mi (8,210.02 km) |
| Guymon to Onnaing | 4,898.30 mi (7,883.06 km) |
| Guymon to Orange | 5,198.89 mi (8,366.81 km) |
| Guymon to Orchies | 4,882.09 mi (7,856.96 km) |
| Guymon to Orleans | 4,933.58 mi (7,939.83 km) |
| Guymon to Orly | 4,918.82 mi (7,916.08 km) |
| Guymon to Ormesson-sur-Marne | 4,922.62 mi (7,922.19 km) |
| Guymon to Orsay | 4,912.92 mi (7,906.58 km) |
