| Guichen to Oignies | 276.64 mi (445.20 km) |
| Guichen to Oissel | 162.38 mi (261.33 km) |
| Guichen to Olivet | 171.27 mi (275.63 km) |
| Guichen to Ollioules | 497.54 mi (800.71 km) |
| Guichen to Olonne-sur-Mer | 98.91 mi (159.17 km) |
| Guichen to Oloron-Sainte-Marie | 334.76 mi (538.74 km) |
| Guichen to Onet Village | 325.52 mi (523.87 km) |
| Guichen to Onnaing | 295.35 mi (475.32 km) |
| Guichen to Orange | 412.41 mi (663.71 km) |
| Guichen to Orchies | 285.77 mi (459.90 km) |
| Guichen to Orleans | 171.50 mi (276.01 km) |
| Guichen to Orly | 199.59 mi (321.20 km) |
| Guichen to Ormesson-sur-Marne | 206.72 mi (332.68 km) |
| Guichen to Orsay | 189.74 mi (305.36 km) |
| Guichen to Orthez | 313.41 mi (504.38 km) |
