| Secanj to Oerlinghausen | 714.72 mi (1,150.23 km) |
| Secanj to Oestrich-Winkel | 673.63 mi (1,084.10 km) |
| Secanj to Offenburg | 641.74 mi (1,032.78 km) |
| Secanj to Oftersheim | 632.89 mi (1,018.53 km) |
| Secanj to Ohrdruf | 596.61 mi (960.16 km) |
| Secanj to Ohringen | 590.21 mi (949.85 km) |
| Secanj to Olbernhau | 501.82 mi (807.60 km) |
| Secanj to Olching | 487.90 mi (785.20 km) |
| Secanj to Oldenburg | 778.64 mi (1,253.10 km) |
| Secanj to Oldenburg in Holstein | 756.89 mi (1,218.09 km) |
| Secanj to Olfen | 751.54 mi (1,209.49 km) |
| Secanj to Olpe | 710.90 mi (1,144.09 km) |
| Secanj to Olsberg | 697.97 mi (1,123.27 km) |
| Secanj to Oranienburg | 613.22 mi (986.89 km) |
| Secanj to Ortenberg | 642.20 mi (1,033.53 km) |
