| Saint-Gregoire to Oestrich-Winkel | 456.25 mi (734.27 km) |
| Saint-Gregoire to Offenburg | 442.30 mi (711.82 km) |
| Saint-Gregoire to Oftersheim | 474.94 mi (764.33 km) |
| Saint-Gregoire to Ohrdruf | 586.43 mi (943.76 km) |
| Saint-Gregoire to Ohringen | 514.99 mi (828.79 km) |
| Saint-Gregoire to Olbernhau | 695.87 mi (1,119.90 km) |
| Saint-Gregoire to Olching | 598.40 mi (963.03 km) |
| Saint-Gregoire to Oldenburg | 553.35 mi (890.53 km) |
| Saint-Gregoire to Oldenburg in Holstein | 688.46 mi (1,107.97 km) |
| Saint-Gregoire to Olfen | 472.13 mi (759.82 km) |
| Saint-Gregoire to Olpe | 469.68 mi (755.88 km) |
| Saint-Gregoire to Olsberg | 504.34 mi (811.66 km) |
| Saint-Gregoire to Oranienburg | 727.64 mi (1,171.02 km) |
| Saint-Gregoire to Ortenberg | 507.27 mi (816.37 km) |
| Saint-Gregoire to Oschatz | 694.22 mi (1,117.25 km) |
