| Hwlffordd to Orthez | 606.39 mi (975.89 km) |
| Hwlffordd to Orvault | 346.93 mi (558.32 km) |
| Hwlffordd to Osny | 362.63 mi (583.60 km) |
| Hwlffordd to Ostwald | 603.48 mi (971.20 km) |
| Hwlffordd to Ouistreham | 270.35 mi (435.09 km) |
| Hwlffordd to Oullins | 611.52 mi (984.15 km) |
| Hwlffordd to Outreau | 293.67 mi (472.62 km) |
| Hwlffordd to Oyonnax | 614.14 mi (988.37 km) |
| Hwlffordd to Ozoir-la-Ferriere | 396.74 mi (638.49 km) |
| Hwlffordd to Pace | 289.50 mi (465.90 km) |
| Hwlffordd to Palaiseau | 383.20 mi (616.69 km) |
| Hwlffordd to Pamiers | 673.50 mi (1,083.89 km) |
| Hwlffordd to Panazol | 500.85 mi (806.04 km) |
| Hwlffordd to Pantin | 381.67 mi (614.24 km) |
| Hwlffordd to Paray-le-Monial | 551.97 mi (888.31 km) |
