| Tullamore to Opwijk | 519.84 mi (836.60 km) |
| Tullamore to Ostend | 462.29 mi (743.98 km) |
| Tullamore to Oud-Heverlee | 542.83 mi (873.60 km) |
| Tullamore to Oud-Turnhout | 543.70 mi (875.00 km) |
| Tullamore to Oudenaarde | 499.62 mi (804.06 km) |
| Tullamore to Oudenburg | 466.62 mi (750.96 km) |
| Tullamore to Oupeye | 585.52 mi (942.31 km) |
| Tullamore to Overijse | 538.82 mi (867.14 km) |
| Tullamore to Overpelt | 563.67 mi (907.13 km) |
| Tullamore to Paal | 557.99 mi (898.00 km) |
| Tullamore to Peer | 567.14 mi (912.72 km) |
| Tullamore to Pepinster | 596.35 mi (959.73 km) |
| Tullamore to Peruwelz | 508.70 mi (818.67 km) |
| Tullamore to Perwez | 554.52 mi (892.41 km) |
| Tullamore to Philippeville | 556.60 mi (895.75 km) |
