| Ourem to Oerlinghausen | 1,182.93 mi (1,903.74 km) |
| Ourem to Oestrich-Winkel | 1,077.54 mi (1,734.14 km) |
| Ourem to Offenburg | 1,017.35 mi (1,637.26 km) |
| Ourem to Oftersheim | 1,075.15 mi (1,730.28 km) |
| Ourem to Ohrdruf | 1,209.37 mi (1,946.30 km) |
| Ourem to Ohringen | 1,104.42 mi (1,777.40 km) |
| Ourem to Olbernhau | 1,302.58 mi (2,096.29 km) |
| Ourem to Olching | 1,147.36 mi (1,846.50 km) |
| Ourem to Oldenburg | 1,222.07 mi (1,966.74 km) |
| Ourem to Oldenburg in Holstein | 1,356.69 mi (2,183.39 km) |
| Ourem to Olfen | 1,129.95 mi (1,818.48 km) |
| Ourem to Olpe | 1,113.84 mi (1,792.55 km) |
| Ourem to Olsberg | 1,150.20 mi (1,851.07 km) |
| Ourem to Oranienburg | 1,371.07 mi (2,206.52 km) |
| Ourem to Ortenberg | 1,129.93 mi (1,818.44 km) |
