| Pen-y-Bont ar Ogwr to Orthez | 569.24 mi (916.11 km) |
| Pen-y-Bont ar Ogwr to Orvault | 305.55 mi (491.73 km) |
| Pen-y-Bont ar Ogwr to Osny | 300.92 mi (484.28 km) |
| Pen-y-Bont ar Ogwr to Ostwald | 540.51 mi (869.86 km) |
| Pen-y-Bont ar Ogwr to Ouistreham | 212.29 mi (341.65 km) |
| Pen-y-Bont ar Ogwr to Oullins | 553.34 mi (890.52 km) |
| Pen-y-Bont ar Ogwr to Outreau | 231.10 mi (371.91 km) |
| Pen-y-Bont ar Ogwr to Oyonnax | 553.94 mi (891.47 km) |
| Pen-y-Bont ar Ogwr to Ozoir-la-Ferriere | 335.01 mi (539.15 km) |
| Pen-y-Bont ar Ogwr to Pace | 245.63 mi (395.31 km) |
| Pen-y-Bont ar Ogwr to Palaiseau | 322.07 mi (518.31 km) |
| Pen-y-Bont ar Ogwr to Pamiers | 628.25 mi (1,011.07 km) |
| Pen-y-Bont ar Ogwr to Panazol | 450.46 mi (724.95 km) |
| Pen-y-Bont ar Ogwr to Pantin | 319.97 mi (514.94 km) |
| Pen-y-Bont ar Ogwr to Paray-le-Monial | 493.36 mi (793.98 km) |
