| Bad Nenndorf to Oria | 906.07 mi (1,458.17 km) |
| Bad Nenndorf to Oristano | 859.72 mi (1,383.58 km) |
| Bad Nenndorf to Orta Nova | 816.47 mi (1,313.98 km) |
| Bad Nenndorf to Orte | 696.59 mi (1,121.05 km) |
| Bad Nenndorf to Ortona | 728.53 mi (1,172.45 km) |
| Bad Nenndorf to Orvieto | 676.56 mi (1,088.82 km) |
| Bad Nenndorf to Orzinuovi | 479.95 mi (772.41 km) |
| Bad Nenndorf to Osimo | 640.31 mi (1,030.48 km) |
| Bad Nenndorf to Ospitaletto | 469.62 mi (755.77 km) |
| Bad Nenndorf to Ostuni | 890.20 mi (1,432.63 km) |
| Bad Nenndorf to Ottaviano | 829.24 mi (1,334.53 km) |
| Bad Nenndorf to Ovada | 532.91 mi (857.63 km) |
| Bad Nenndorf to Ozieri | 812.18 mi (1,307.07 km) |
| Bad Nenndorf to Paceco | 1,003.45 mi (1,614.89 km) |
| Bad Nenndorf to Pachino | 1,114.56 mi (1,793.71 km) |
