| Reggello to Oerlinghausen | 587.45 mi (945.41 km) |
| Reggello to Oestrich-Winkel | 467.16 mi (751.82 km) |
| Reggello to Offenburg | 372.73 mi (599.85 km) |
| Reggello to Oftersheim | 417.12 mi (671.29 km) |
| Reggello to Ohrdruf | 495.07 mi (796.75 km) |
| Reggello to Ohringen | 393.23 mi (632.84 km) |
| Reggello to Olbernhau | 489.82 mi (788.28 km) |
| Reggello to Olching | 312.25 mi (502.51 km) |
| Reggello to Oldenburg | 670.96 mi (1,079.81 km) |
| Reggello to Oldenburg in Holstein | 734.13 mi (1,181.46 km) |
| Reggello to Olfen | 587.40 mi (945.32 km) |
| Reggello to Olpe | 535.30 mi (861.48 km) |
| Reggello to Olsberg | 548.38 mi (882.53 km) |
| Reggello to Oranienburg | 631.59 mi (1,016.45 km) |
| Reggello to Ortenberg | 475.50 mi (765.24 km) |
