| Pont-y-pwl to Oerlinghausen | 499.65 mi (804.11 km) |
| Pont-y-pwl to Oestrich-Winkel | 495.25 mi (797.03 km) |
| Pont-y-pwl to Offenburg | 534.75 mi (860.59 km) |
| Pont-y-pwl to Oftersheim | 534.69 mi (860.49 km) |
| Pont-y-pwl to Ohrdruf | 597.63 mi (961.80 km) |
| Pont-y-pwl to Ohringen | 577.34 mi (929.15 km) |
| Pont-y-pwl to Olbernhau | 711.23 mi (1,144.62 km) |
| Pont-y-pwl to Olching | 681.24 mi (1,096.36 km) |
| Pont-y-pwl to Oldenburg | 484.01 mi (778.95 km) |
| Pont-y-pwl to Oldenburg in Holstein | 604.97 mi (973.61 km) |
| Pont-y-pwl to Olfen | 445.92 mi (717.64 km) |
| Pont-y-pwl to Olpe | 471.10 mi (758.17 km) |
| Pont-y-pwl to Olsberg | 495.47 mi (797.39 km) |
| Pont-y-pwl to Oranienburg | 691.21 mi (1,112.39 km) |
| Pont-y-pwl to Ortenberg | 533.17 mi (858.05 km) |
