| Holt to Oerlinghausen | 4,107.62 mi (6,610.58 km) |
| Holt to Oestrich-Winkel | 4,154.52 mi (6,686.05 km) |
| Holt to Offenburg | 4,208.76 mi (6,773.35 km) |
| Holt to Oftersheim | 4,199.88 mi (6,759.05 km) |
| Holt to Ohrdruf | 4,224.96 mi (6,799.41 km) |
| Holt to Ohringen | 4,240.90 mi (6,825.06 km) |
| Holt to Olbernhau | 4,325.40 mi (6,961.06 km) |
| Holt to Olching | 4,348.21 mi (6,997.77 km) |
| Holt to Oldenburg | 4,049.39 mi (6,516.86 km) |
| Holt to Oldenburg in Holstein | 4,101.52 mi (6,600.75 km) |
| Holt to Olfen | 4,069.68 mi (6,549.51 km) |
| Holt to Olpe | 4,111.31 mi (6,616.51 km) |
| Holt to Olsberg | 4,123.24 mi (6,635.71 km) |
| Holt to Oranienburg | 4,240.59 mi (6,824.57 km) |
| Holt to Ortenberg | 4,180.87 mi (6,728.46 km) |
