| Catalca to Oerlinghausen | 1,195.00 mi (1,923.16 km) |
| Catalca to Oestrich-Winkel | 1,157.94 mi (1,863.52 km) |
| Catalca to Offenburg | 1,121.69 mi (1,805.18 km) |
| Catalca to Oftersheim | 1,116.59 mi (1,796.97 km) |
| Catalca to Ohrdruf | 1,078.06 mi (1,734.97 km) |
| Catalca to Ohringen | 1,074.06 mi (1,728.54 km) |
| Catalca to Olbernhau | 977.53 mi (1,573.18 km) |
| Catalca to Olching | 970.31 mi (1,561.56 km) |
| Catalca to Oldenburg | 1,254.32 mi (2,018.63 km) |
| Catalca to Oldenburg in Holstein | 1,215.64 mi (1,956.39 km) |
| Catalca to Olfen | 1,234.22 mi (1,986.28 km) |
| Catalca to Olpe | 1,194.73 mi (1,922.73 km) |
| Catalca to Olsberg | 1,180.58 mi (1,899.96 km) |
| Catalca to Oranienburg | 1,072.42 mi (1,725.90 km) |
| Catalca to Ortenberg | 1,126.37 mi (1,812.72 km) |
