| Castel Gandolfo to Nowy Sacz | 667.75 mi (1,074.65 km) |
| Castel Gandolfo to Nowy Targ | 640.58 mi (1,030.92 km) |
| Castel Gandolfo to Nowy Tomysl | 748.25 mi (1,204.19 km) |
| Castel Gandolfo to Nysa | 642.84 mi (1,034.55 km) |
| Castel Gandolfo to Oborniki | 777.95 mi (1,251.99 km) |
| Castel Gandolfo to Oborniki Slaskie | 689.89 mi (1,110.27 km) |
| Castel Gandolfo to Olawa | 671.98 mi (1,081.45 km) |
| Castel Gandolfo to Olecko | 961.67 mi (1,547.66 km) |
| Castel Gandolfo to Olesnica | 690.49 mi (1,111.23 km) |
| Castel Gandolfo to Olesno | 687.57 mi (1,106.53 km) |
| Castel Gandolfo to Olkusz | 675.88 mi (1,087.73 km) |
| Castel Gandolfo to Olsztyn | 905.97 mi (1,458.01 km) |
| Castel Gandolfo to Opalenica | 750.62 mi (1,208.00 km) |
| Castel Gandolfo to Opoczno | 756.87 mi (1,218.06 km) |
| Castel Gandolfo to Opole | 665.60 mi (1,071.18 km) |
