| Heemskerk to Oerlinghausen | 173.42 mi (279.09 km) |
| Heemskerk to Oestrich-Winkel | 225.80 mi (363.40 km) |
| Heemskerk to Offenburg | 314.44 mi (506.04 km) |
| Heemskerk to Oftersheim | 276.22 mi (444.53 km) |
| Heemskerk to Ohrdruf | 284.79 mi (458.33 km) |
| Heemskerk to Ohringen | 311.24 mi (500.89 km) |
| Heemskerk to Olbernhau | 393.07 mi (632.58 km) |
| Heemskerk to Olching | 417.86 mi (672.48 km) |
| Heemskerk to Oldenburg | 154.27 mi (248.27 km) |
| Heemskerk to Oldenburg in Holstein | 284.01 mi (457.08 km) |
| Heemskerk to Olfen | 127.82 mi (205.70 km) |
| Heemskerk to Olpe | 170.49 mi (274.37 km) |
| Heemskerk to Olsberg | 181.45 mi (292.01 km) |
| Heemskerk to Oranienburg | 359.52 mi (578.60 km) |
| Heemskerk to Ortenberg | 240.80 mi (387.54 km) |
