| Llantrisant to Orthez | 569.49 mi (916.50 km) |
| Llantrisant to Orvault | 305.36 mi (491.43 km) |
| Llantrisant to Osny | 294.86 mi (474.53 km) |
| Llantrisant to Ostwald | 532.94 mi (857.69 km) |
| Llantrisant to Ouistreham | 207.99 mi (334.73 km) |
| Llantrisant to Oullins | 548.66 mi (882.98 km) |
| Llantrisant to Outreau | 223.08 mi (359.01 km) |
| Llantrisant to Oyonnax | 548.49 mi (882.72 km) |
| Llantrisant to Ozoir-la-Ferriere | 328.93 mi (529.36 km) |
| Llantrisant to Pace | 245.11 mi (394.47 km) |
| Llantrisant to Palaiseau | 316.31 mi (509.05 km) |
| Llantrisant to Pamiers | 626.86 mi (1,008.83 km) |
| Llantrisant to Panazol | 448.03 mi (721.04 km) |
| Llantrisant to Pantin | 313.90 mi (505.18 km) |
| Llantrisant to Paray-le-Monial | 488.55 mi (786.24 km) |
