| Madrid to Noventa Vicentina | 840.14 mi (1,352.07 km) |
| Madrid to Novi di Modena | 802.51 mi (1,291.51 km) |
| Madrid to Novi Ligure | 701.57 mi (1,129.07 km) |
| Madrid to Nuoro | 685.70 mi (1,103.53 km) |
| Madrid to Occhiobello | 834.91 mi (1,343.65 km) |
| Madrid to Oderzo | 895.07 mi (1,440.48 km) |
| Madrid to Oggiono | 754.40 mi (1,214.08 km) |
| Madrid to Olbia | 692.16 mi (1,113.93 km) |
| Madrid to Oleggio | 717.70 mi (1,155.03 km) |
| Madrid to Olgiate Comasco | 737.69 mi (1,187.19 km) |
| Madrid to Olgiate Olona | 729.61 mi (1,174.19 km) |
| Madrid to Omegna | 716.51 mi (1,153.11 km) |
| Madrid to Opera | 737.27 mi (1,186.52 km) |
| Madrid to Oppeano | 824.37 mi (1,326.70 km) |
| Madrid to Orbassano | 652.01 mi (1,049.32 km) |
