| Ilkeston to Oerlinghausen | 425.22 mi (684.33 km) |
| Ilkeston to Oestrich-Winkel | 449.59 mi (723.55 km) |
| Ilkeston to Offenburg | 509.55 mi (820.04 km) |
| Ilkeston to Oftersheim | 494.95 mi (796.54 km) |
| Ilkeston to Ohrdruf | 533.58 mi (858.71 km) |
| Ilkeston to Ohringen | 535.84 mi (862.36 km) |
| Ilkeston to Olbernhau | 644.06 mi (1,036.52 km) |
| Ilkeston to Olching | 643.23 mi (1,035.17 km) |
| Ilkeston to Oldenburg | 395.34 mi (636.23 km) |
| Ilkeston to Oldenburg in Holstein | 507.18 mi (816.22 km) |
| Ilkeston to Olfen | 376.75 mi (606.31 km) |
| Ilkeston to Olpe | 411.37 mi (662.04 km) |
| Ilkeston to Olsberg | 429.51 mi (691.23 km) |
| Ilkeston to Oranienburg | 605.91 mi (975.11 km) |
| Ilkeston to Ortenberg | 478.98 mi (770.84 km) |
