| Haddington to Nuth | 497.72 mi (801.00 km) |
| Haddington to Oegstgeest | 392.44 mi (631.58 km) |
| Haddington to Oirschot | 451.03 mi (725.86 km) |
| Haddington to Oisterwijk | 443.90 mi (714.39 km) |
| Haddington to Oldebroek | 425.85 mi (685.34 km) |
| Haddington to Oldenzaal | 466.11 mi (750.13 km) |
| Haddington to Ommen | 440.39 mi (708.74 km) |
| Haddington to Oosterend | 409.13 mi (658.44 km) |
| Haddington to Oosterhout | 430.75 mi (693.23 km) |
| Haddington to Oosterwolde | 417.47 mi (671.85 km) |
| Haddington to Oostzaan | 393.60 mi (633.44 km) |
| Haddington to Opmeer | 383.88 mi (617.79 km) |
| Haddington to Oss | 444.56 mi (715.45 km) |
| Haddington to Oud-Beijerland | 408.64 mi (657.65 km) |
| Haddington to Oudenbosch | 423.85 mi (682.11 km) |
