| Connahs Quay to Oerlinghausen | 499.02 mi (803.10 km) |
| Connahs Quay to Oestrich-Winkel | 523.22 mi (842.04 km) |
| Connahs Quay to Offenburg | 580.12 mi (933.61 km) |
| Connahs Quay to Oftersheim | 567.97 mi (914.06 km) |
| Connahs Quay to Ohrdruf | 608.01 mi (978.50 km) |
| Connahs Quay to Ohringen | 609.18 mi (980.38 km) |
| Connahs Quay to Olbernhau | 718.26 mi (1,155.92 km) |
| Connahs Quay to Olching | 716.31 mi (1,152.79 km) |
| Connahs Quay to Oldenburg | 466.24 mi (750.34 km) |
| Connahs Quay to Oldenburg in Holstein | 573.34 mi (922.70 km) |
| Connahs Quay to Olfen | 451.09 mi (725.96 km) |
| Connahs Quay to Olpe | 485.85 mi (781.91 km) |
| Connahs Quay to Olsberg | 503.94 mi (811.02 km) |
| Connahs Quay to Oranienburg | 677.03 mi (1,089.57 km) |
| Connahs Quay to Ortenberg | 553.32 mi (890.48 km) |
