| Southport to Oerlinghausen | 500.52 mi (805.51 km) |
| Southport to Oestrich-Winkel | 532.49 mi (856.96 km) |
| Southport to Offenburg | 593.74 mi (955.53 km) |
| Southport to Oftersheim | 578.40 mi (930.85 km) |
| Southport to Ohrdruf | 611.90 mi (984.75 km) |
| Southport to Ohringen | 619.00 mi (996.19 km) |
| Southport to Olbernhau | 720.69 mi (1,159.84 km) |
| Southport to Olching | 726.57 mi (1,169.30 km) |
| Southport to Oldenburg | 463.05 mi (745.20 km) |
| Southport to Oldenburg in Holstein | 565.27 mi (909.72 km) |
| Southport to Olfen | 454.65 mi (731.70 km) |
| Southport to Olpe | 491.78 mi (791.44 km) |
| Southport to Olsberg | 507.97 mi (817.50 km) |
| Southport to Oranienburg | 673.57 mi (1,084.00 km) |
| Southport to Ortenberg | 560.25 mi (901.64 km) |
