| Gien to Oignies | 192.19 mi (309.30 km) |
| Gien to Oissel | 133.50 mi (214.85 km) |
| Gien to Olivet | 35.53 mi (57.18 km) |
| Gien to Ollioules | 351.52 mi (565.72 km) |
| Gien to Olonne-sur-Mer | 221.78 mi (356.91 km) |
| Gien to Oloron-Sainte-Marie | 348.32 mi (560.56 km) |
| Gien to Onet Village | 230.26 mi (370.57 km) |
| Gien to Onnaing | 190.99 mi (307.37 km) |
| Gien to Orange | 267.41 mi (430.35 km) |
| Gien to Orchies | 193.88 mi (312.02 km) |
| Gien to Orleans | 36.11 mi (58.11 km) |
| Gien to Orly | 73.04 mi (117.55 km) |
| Gien to Ormesson-sur-Marne | 75.26 mi (121.12 km) |
| Gien to Orsay | 71.97 mi (115.83 km) |
| Gien to Orthez | 333.94 mi (537.42 km) |
