| Preakness to Noventa Vicentina | 4,123.01 mi (6,635.34 km) |
| Preakness to Novi di Modena | 4,109.20 mi (6,613.12 km) |
| Preakness to Novi Ligure | 4,022.63 mi (6,473.79 km) |
| Preakness to Nuoro | 4,197.60 mi (6,755.39 km) |
| Preakness to Occhiobello | 4,137.28 mi (6,658.32 km) |
| Preakness to Oderzo | 4,146.65 mi (6,673.39 km) |
| Preakness to Oggiono | 4,013.67 mi (6,459.38 km) |
| Preakness to Olbia | 4,184.07 mi (6,733.61 km) |
| Preakness to Oleggio | 3,988.94 mi (6,419.57 km) |
| Preakness to Olgiate Comasco | 3,997.33 mi (6,433.08 km) |
| Preakness to Olgiate Olona | 3,998.57 mi (6,435.08 km) |
| Preakness to Omegna | 3,970.39 mi (6,389.73 km) |
| Preakness to Opera | 4,020.91 mi (6,471.04 km) |
| Preakness to Oppeano | 4,107.59 mi (6,610.52 km) |
| Preakness to Orbassano | 3,960.54 mi (6,373.87 km) |
