| Monterotondo to Oststeinbek | 802.15 mi (1,290.93 km) |
| Monterotondo to Ottendorf-Okrilla | 633.35 mi (1,019.28 km) |
| Monterotondo to Ottersberg | 780.15 mi (1,255.53 km) |
| Monterotondo to Ottobrunn | 418.28 mi (673.16 km) |
| Monterotondo to Ottweiler | 569.47 mi (916.47 km) |
| Monterotondo to Overath | 664.45 mi (1,069.33 km) |
| Monterotondo to Oyten | 778.82 mi (1,253.39 km) |
| Monterotondo to Paderborn | 692.20 mi (1,113.99 km) |
| Monterotondo to Papenburg | 798.56 mi (1,285.16 km) |
| Monterotondo to Parchim | 786.19 mi (1,265.26 km) |
| Monterotondo to Pasewalk | 793.68 mi (1,277.31 km) |
| Monterotondo to Passau | 452.66 mi (728.49 km) |
| Monterotondo to Pattensen | 718.34 mi (1,156.06 km) |
| Monterotondo to Pegnitz | 534.93 mi (860.89 km) |
| Monterotondo to Peine | 718.27 mi (1,155.95 km) |
