| Totteridge to Oerlinghausen | 379.30 mi (610.43 km) |
| Totteridge to Oestrich-Winkel | 375.12 mi (603.70 km) |
| Totteridge to Offenburg | 421.70 mi (678.66 km) |
| Totteridge to Oftersheim | 416.23 mi (669.85 km) |
| Totteridge to Ohrdruf | 475.82 mi (765.76 km) |
| Totteridge to Ohringen | 458.56 mi (737.98 km) |
| Totteridge to Olbernhau | 589.48 mi (948.67 km) |
| Totteridge to Olching | 563.85 mi (907.42 km) |
| Totteridge to Oldenburg | 369.53 mi (594.70 km) |
| Totteridge to Oldenburg in Holstein | 495.92 mi (798.11 km) |
| Totteridge to Olfen | 324.81 mi (522.73 km) |
| Totteridge to Olpe | 349.29 mi (562.12 km) |
| Totteridge to Olsberg | 373.84 mi (601.64 km) |
| Totteridge to Oranienburg | 573.45 mi (922.89 km) |
| Totteridge to Ortenberg | 411.77 mi (662.68 km) |
