| Bideford to Oerlinghausen | 557.04 mi (896.48 km) |
| Bideford to Oestrich-Winkel | 540.41 mi (869.71 km) |
| Bideford to Offenburg | 569.27 mi (916.16 km) |
| Bideford to Oftersheim | 576.43 mi (927.68 km) |
| Bideford to Ohrdruf | 649.80 mi (1,045.76 km) |
| Bideford to Ohringen | 619.33 mi (996.72 km) |
| Bideford to Olbernhau | 763.95 mi (1,229.46 km) |
| Bideford to Olching | 720.32 mi (1,159.24 km) |
| Bideford to Oldenburg | 546.81 mi (880.01 km) |
| Bideford to Oldenburg in Holstein | 670.39 mi (1,078.89 km) |
| Bideford to Olfen | 501.87 mi (807.68 km) |
| Bideford to Olpe | 522.85 mi (841.45 km) |
| Bideford to Olsberg | 549.50 mi (884.34 km) |
| Bideford to Oranienburg | 751.72 mi (1,209.78 km) |
| Bideford to Ortenberg | 581.65 mi (936.07 km) |
