| Helsingor to Oestrich-Winkel | 458.69 mi (738.19 km) |
| Helsingor to Offenburg | 558.81 mi (899.32 km) |
| Helsingor to Oftersheim | 490.17 mi (788.86 km) |
| Helsingor to Ohrdruf | 367.99 mi (592.22 km) |
| Helsingor to Ohringen | 489.87 mi (788.36 km) |
| Helsingor to Olbernhau | 372.19 mi (598.98 km) |
| Helsingor to Olching | 544.16 mi (875.74 km) |
| Helsingor to Oldenburg | 266.13 mi (428.30 km) |
| Helsingor to Oldenburg in Holstein | 137.91 mi (221.95 km) |
| Helsingor to Olfen | 366.33 mi (589.56 km) |
| Helsingor to Olpe | 398.20 mi (640.84 km) |
| Helsingor to Olsberg | 364.96 mi (587.35 km) |
| Helsingor to Oranienburg | 228.15 mi (367.17 km) |
| Helsingor to Ortenberg | 418.98 mi (674.28 km) |
| Helsingor to Oschatz | 327.85 mi (527.62 km) |
