| Castelfiorentino to Novi di Modena | 89.42 mi (143.91 km) |
| Castelfiorentino to Novi Ligure | 134.51 mi (216.47 km) |
| Castelfiorentino to Nuoro | 241.87 mi (389.25 km) |
| Castelfiorentino to Occhiobello | 96.24 mi (154.89 km) |
| Castelfiorentino to Oderzo | 168.29 mi (270.83 km) |
| Castelfiorentino to Oggiono | 170.47 mi (274.34 km) |
| Castelfiorentino to Olbia | 199.99 mi (321.85 km) |
| Castelfiorentino to Oleggio | 179.63 mi (289.09 km) |
| Castelfiorentino to Olgiate Comasco | 180.00 mi (289.69 km) |
| Castelfiorentino to Olgiate Olona | 173.87 mi (279.82 km) |
| Castelfiorentino to Omegna | 201.37 mi (324.07 km) |
| Castelfiorentino to Opera | 150.40 mi (242.04 km) |
| Castelfiorentino to Oppeano | 117.94 mi (189.81 km) |
| Castelfiorentino to Orbassano | 195.46 mi (314.57 km) |
| Castelfiorentino to Orbetello | 81.15 mi (130.59 km) |
