| Ballincollig to Opwijk | 553.19 mi (890.27 km) |
| Ballincollig to Ostend | 495.98 mi (798.20 km) |
| Ballincollig to Oud-Heverlee | 575.71 mi (926.51 km) |
| Ballincollig to Oud-Turnhout | 582.95 mi (938.17 km) |
| Ballincollig to Oudenaarde | 530.01 mi (852.98 km) |
| Ballincollig to Oudenburg | 499.92 mi (804.55 km) |
| Ballincollig to Oupeye | 619.23 mi (996.55 km) |
| Ballincollig to Overijse | 570.78 mi (918.58 km) |
| Ballincollig to Overpelt | 602.58 mi (969.75 km) |
| Ballincollig to Paal | 594.40 mi (956.59 km) |
| Ballincollig to Peer | 605.17 mi (973.93 km) |
| Ballincollig to Pepinster | 628.91 mi (1,012.13 km) |
| Ballincollig to Peruwelz | 534.76 mi (860.62 km) |
| Ballincollig to Perwez | 585.30 mi (941.95 km) |
| Ballincollig to Philippeville | 581.72 mi (936.18 km) |
