| Guymon to Opwijk | 4,896.28 mi (7,879.81 km) |
| Guymon to Ostend | 4,841.02 mi (7,790.86 km) |
| Guymon to Oud-Heverlee | 4,918.80 mi (7,916.04 km) |
| Guymon to Oud-Turnhout | 4,910.54 mi (7,902.76 km) |
| Guymon to Oudenaarde | 4,880.10 mi (7,853.76 km) |
| Guymon to Oudenburg | 4,845.55 mi (7,798.16 km) |
| Guymon to Oupeye | 4,958.43 mi (7,979.82 km) |
| Guymon to Overijse | 4,916.06 mi (7,911.64 km) |
| Guymon to Overpelt | 4,929.78 mi (7,933.72 km) |
| Guymon to Paal | 4,928.40 mi (7,931.49 km) |
| Guymon to Peer | 4,934.48 mi (7,941.28 km) |
| Guymon to Pepinster | 4,970.35 mi (7,999.01 km) |
| Guymon to Peruwelz | 4,892.67 mi (7,873.99 km) |
| Guymon to Perwez | 4,932.49 mi (7,938.07 km) |
| Guymon to Philippeville | 4,940.09 mi (7,950.31 km) |
