| Guichen to Novi di Modena | 639.92 mi (1,029.85 km) |
| Guichen to Novi Ligure | 550.43 mi (885.84 km) |
| Guichen to Nuoro | 762.69 mi (1,227.42 km) |
| Guichen to Occhiobello | 669.67 mi (1,077.73 km) |
| Guichen to Oderzo | 690.47 mi (1,111.20 km) |
| Guichen to Oggiono | 547.04 mi (880.37 km) |
| Guichen to Olbia | 738.76 mi (1,188.91 km) |
| Guichen to Oleggio | 519.30 mi (835.74 km) |
| Guichen to Olgiate Comasco | 529.71 mi (852.48 km) |
| Guichen to Olgiate Olona | 529.66 mi (852.41 km) |
| Guichen to Omegna | 502.16 mi (808.15 km) |
| Guichen to Opera | 551.14 mi (886.97 km) |
| Guichen to Oppeano | 641.83 mi (1,032.92 km) |
| Guichen to Orbassano | 488.36 mi (785.93 km) |
| Guichen to Orbetello | 738.07 mi (1,187.82 km) |
