| Diemen to Noventa Vicentina | 570.92 mi (918.80 km) |
| Diemen to Novi di Modena | 580.68 mi (934.51 km) |
| Diemen to Novi Ligure | 551.50 mi (887.56 km) |
| Diemen to Nuoro | 855.60 mi (1,376.96 km) |
| Diemen to Occhiobello | 593.98 mi (955.92 km) |
| Diemen to Oderzo | 566.00 mi (910.89 km) |
| Diemen to Oggiono | 493.94 mi (794.91 km) |
| Diemen to Olbia | 817.20 mi (1,315.15 km) |
| Diemen to Oleggio | 493.90 mi (794.85 km) |
| Diemen to Olgiate Comasco | 487.26 mi (784.17 km) |
| Diemen to Olgiate Olona | 495.64 mi (797.65 km) |
| Diemen to Omegna | 472.24 mi (759.99 km) |
| Diemen to Opera | 517.38 mi (832.64 km) |
| Diemen to Oppeano | 561.79 mi (904.11 km) |
| Diemen to Orbassano | 519.50 mi (836.05 km) |
