| Croxley Green to Octeville | 149.12 mi (239.98 km) |
| Croxley Green to Oignies | 170.04 mi (273.65 km) |
| Croxley Green to Oissel | 172.98 mi (278.39 km) |
| Croxley Green to Olivet | 281.54 mi (453.09 km) |
| Croxley Green to Ollioules | 656.79 mi (1,057.00 km) |
| Croxley Green to Olonne-sur-Mer | 358.19 mi (576.44 km) |
| Croxley Green to Oloron-Sainte-Marie | 584.08 mi (939.99 km) |
| Croxley Green to Onet Village | 522.21 mi (840.42 km) |
| Croxley Green to Onnaing | 196.06 mi (315.52 km) |
| Croxley Green to Orange | 572.71 mi (921.69 km) |
| Croxley Green to Orchies | 179.49 mi (288.85 km) |
| Croxley Green to Orleans | 279.19 mi (449.31 km) |
| Croxley Green to Orly | 236.58 mi (380.74 km) |
| Croxley Green to Ormesson-sur-Marne | 237.61 mi (382.39 km) |
| Croxley Green to Orsay | 234.66 mi (377.66 km) |
