| Heswall to Oerlinghausen | 501.50 mi (807.09 km) |
| Heswall to Oestrich-Winkel | 527.57 mi (849.04 km) |
| Heswall to Offenburg | 585.45 mi (942.19 km) |
| Heswall to Oftersheim | 572.59 mi (921.50 km) |
| Heswall to Ohrdruf | 611.10 mi (983.48 km) |
| Heswall to Ohringen | 613.68 mi (987.62 km) |
| Heswall to Olbernhau | 721.02 mi (1,160.37 km) |
| Heswall to Olching | 720.92 mi (1,160.21 km) |
| Heswall to Oldenburg | 467.51 mi (752.39 km) |
| Heswall to Oldenburg in Holstein | 573.36 mi (922.74 km) |
| Heswall to Olfen | 454.06 mi (730.74 km) |
| Heswall to Olpe | 489.41 mi (787.63 km) |
| Heswall to Olsberg | 507.05 mi (816.01 km) |
| Heswall to Oranienburg | 678.29 mi (1,091.60 km) |
| Heswall to Ortenberg | 557.13 mi (896.61 km) |
