| Corum to Oerlinghausen | 1,470.83 mi (2,367.07 km) |
| Corum to Oestrich-Winkel | 1,453.56 mi (2,339.27 km) |
| Corum to Offenburg | 1,430.19 mi (2,301.67 km) |
| Corum to Oftersheim | 1,416.50 mi (2,279.64 km) |
| Corum to Ohrdruf | 1,358.73 mi (2,186.67 km) |
| Corum to Ohringen | 1,373.60 mi (2,210.59 km) |
| Corum to Olbernhau | 1,250.25 mi (2,012.08 km) |
| Corum to Olching | 1,274.96 mi (2,051.85 km) |
| Corum to Oldenburg | 1,520.21 mi (2,446.55 km) |
| Corum to Oldenburg in Holstein | 1,460.05 mi (2,349.73 km) |
| Corum to Olfen | 1,515.88 mi (2,439.57 km) |
| Corum to Olpe | 1,481.66 mi (2,384.50 km) |
| Corum to Olsberg | 1,462.78 mi (2,354.12 km) |
| Corum to Oranienburg | 1,322.32 mi (2,128.07 km) |
| Corum to Ortenberg | 1,416.39 mi (2,279.46 km) |
