| Waterloo to Oestrich-Winkel | 166.92 mi (268.63 km) |
| Waterloo to Offenburg | 222.32 mi (357.79 km) |
| Waterloo to Oftersheim | 208.29 mi (335.22 km) |
| Waterloo to Ohrdruf | 277.46 mi (446.53 km) |
| Waterloo to Ohringen | 250.35 mi (402.90 km) |
| Waterloo to Olbernhau | 391.52 mi (630.09 km) |
| Waterloo to Olching | 356.44 mi (573.63 km) |
| Waterloo to Oldenburg | 233.94 mi (376.49 km) |
| Waterloo to Oldenburg in Holstein | 368.53 mi (593.10 km) |
| Waterloo to Olfen | 147.06 mi (236.67 km) |
| Waterloo to Olpe | 151.85 mi (244.38 km) |
| Waterloo to Olsberg | 183.42 mi (295.18 km) |
| Waterloo to Oranienburg | 403.83 mi (649.89 km) |
| Waterloo to Ortenberg | 206.65 mi (332.56 km) |
| Waterloo to Oschatz | 381.17 mi (613.43 km) |
