| Holborn to Noventa Vicentina | 685.01 mi (1,102.41 km) |
| Holborn to Novi di Modena | 681.97 mi (1,097.53 km) |
| Holborn to Novi Ligure | 620.87 mi (999.19 km) |
| Holborn to Nuoro | 895.78 mi (1,441.61 km) |
| Holborn to Occhiobello | 704.00 mi (1,132.98 km) |
| Holborn to Oderzo | 697.35 mi (1,122.27 km) |
| Holborn to Oggiono | 585.43 mi (942.16 km) |
| Holborn to Olbia | 863.22 mi (1,389.23 km) |
| Holborn to Oleggio | 571.36 mi (919.51 km) |
| Holborn to Olgiate Comasco | 572.73 mi (921.71 km) |
| Holborn to Olgiate Olona | 577.65 mi (929.64 km) |
| Holborn to Omegna | 549.73 mi (884.70 km) |
| Holborn to Opera | 601.29 mi (967.69 km) |
| Holborn to Oppeano | 671.87 mi (1,081.27 km) |
| Holborn to Orbassano | 570.61 mi (918.31 km) |
