| Ickenham to Oerlinghausen | 390.56 mi (628.54 km) |
| Ickenham to Oestrich-Winkel | 384.22 mi (618.35 km) |
| Ickenham to Offenburg | 428.72 mi (689.95 km) |
| Ickenham to Oftersheim | 424.72 mi (683.52 km) |
| Ickenham to Ohrdruf | 486.29 mi (782.61 km) |
| Ickenham to Ohringen | 467.17 mi (751.84 km) |
| Ickenham to Olbernhau | 600.06 mi (965.70 km) |
| Ickenham to Olching | 572.06 mi (920.64 km) |
| Ickenham to Oldenburg | 381.37 mi (613.76 km) |
| Ickenham to Oldenburg in Holstein | 507.85 mi (817.31 km) |
| Ickenham to Olfen | 335.86 mi (540.51 km) |
| Ickenham to Olpe | 359.62 mi (578.75 km) |
| Ickenham to Olsberg | 384.58 mi (618.93 km) |
| Ickenham to Oranienburg | 585.06 mi (941.56 km) |
| Ickenham to Ortenberg | 421.56 mi (678.43 km) |
