| Ridderkerk to Oschatz | 367.11 mi (590.81 km) |
| Ridderkerk to Oschersleben | 283.34 mi (455.99 km) |
| Ridderkerk to Osnabruck | 149.30 mi (240.27 km) |
| Ridderkerk to Ostbevern | 138.72 mi (223.24 km) |
| Ridderkerk to Osterburg | 309.05 mi (497.38 km) |
| Ridderkerk to Ostercappeln | 157.74 mi (253.85 km) |
| Ridderkerk to Osterhofen | 430.89 mi (693.45 km) |
| Ridderkerk to Osterholz-Scharmbeck | 199.58 mi (321.19 km) |
| Ridderkerk to Osternienburg | 316.56 mi (509.46 km) |
| Ridderkerk to Osterode | 241.65 mi (388.89 km) |
| Ridderkerk to Osterwieck | 260.69 mi (419.54 km) |
| Ridderkerk to Ostfildern | 298.19 mi (479.89 km) |
| Ridderkerk to Osthofen | 220.81 mi (355.36 km) |
| Ridderkerk to Ostrhauderfehn | 153.49 mi (247.02 km) |
| Ridderkerk to Ostringen | 256.90 mi (413.44 km) |
