| Carrick on Shannon to Octeville | 405.91 mi (653.24 km) |
| Carrick on Shannon to Oignies | 526.54 mi (847.38 km) |
| Carrick on Shannon to Oissel | 505.53 mi (813.58 km) |
| Carrick on Shannon to Olivet | 604.06 mi (972.14 km) |
| Carrick on Shannon to Ollioules | 978.30 mi (1,574.43 km) |
| Carrick on Shannon to Olonne-sur-Mer | 582.58 mi (937.58 km) |
| Carrick on Shannon to Oloron-Sainte-Marie | 816.77 mi (1,314.46 km) |
| Carrick on Shannon to Onet Village | 817.41 mi (1,315.49 km) |
| Carrick on Shannon to Onnaing | 552.22 mi (888.71 km) |
| Carrick on Shannon to Orange | 891.99 mi (1,435.52 km) |
| Carrick on Shannon to Orchies | 535.77 mi (862.24 km) |
| Carrick on Shannon to Orleans | 602.35 mi (969.38 km) |
| Carrick on Shannon to Orly | 576.91 mi (928.45 km) |
| Carrick on Shannon to Ormesson-sur-Marne | 579.88 mi (933.22 km) |
| Carrick on Shannon to Orsay | 572.19 mi (920.86 km) |
