| Pontneddfechan to Oerlinghausen | 522.48 mi (840.86 km) |
| Pontneddfechan to Oestrich-Winkel | 518.93 mi (835.14 km) |
| Pontneddfechan to Offenburg | 557.98 mi (897.98 km) |
| Pontneddfechan to Oftersheim | 558.31 mi (898.51 km) |
| Pontneddfechan to Ohrdruf | 621.05 mi (999.49 km) |
| Pontneddfechan to Ohringen | 600.98 mi (967.19 km) |
| Pontneddfechan to Olbernhau | 734.59 mi (1,182.20 km) |
| Pontneddfechan to Olching | 704.79 mi (1,134.25 km) |
| Pontneddfechan to Oldenburg | 505.52 mi (813.56 km) |
| Pontneddfechan to Oldenburg in Holstein | 625.24 mi (1,006.22 km) |
| Pontneddfechan to Olfen | 469.00 mi (754.78 km) |
| Pontneddfechan to Olpe | 494.59 mi (795.97 km) |
| Pontneddfechan to Olsberg | 518.76 mi (834.86 km) |
| Pontneddfechan to Oranienburg | 713.30 mi (1,147.94 km) |
| Pontneddfechan to Ortenberg | 556.80 mi (896.08 km) |
