| Llanelli to Octeville | 179.94 mi (289.58 km) |
| Llanelli to Oignies | 321.66 mi (517.66 km) |
| Llanelli to Oissel | 281.82 mi (453.54 km) |
| Llanelli to Olivet | 377.74 mi (607.92 km) |
| Llanelli to Ollioules | 751.96 mi (1,210.17 km) |
| Llanelli to Olonne-sur-Mer | 371.70 mi (598.19 km) |
| Llanelli to Oloron-Sainte-Marie | 609.48 mi (980.87 km) |
| Llanelli to Onet Village | 593.70 mi (955.47 km) |
| Llanelli to Onnaing | 348.71 mi (561.19 km) |
| Llanelli to Orange | 665.68 mi (1,071.31 km) |
| Llanelli to Orchies | 332.04 mi (534.37 km) |
| Llanelli to Orleans | 376.08 mi (605.24 km) |
| Llanelli to Orly | 353.74 mi (569.29 km) |
| Llanelli to Ormesson-sur-Marne | 357.29 mi (574.99 km) |
| Llanelli to Orsay | 348.33 mi (560.58 km) |
