| Silistra to Oestrich-Winkel | 989.82 mi (1,592.96 km) |
| Silistra to Offenburg | 967.35 mi (1,556.80 km) |
| Silistra to Oftersheim | 952.66 mi (1,533.15 km) |
| Silistra to Ohrdruf | 897.48 mi (1,444.35 km) |
| Silistra to Ohringen | 909.76 mi (1,464.11 km) |
| Silistra to Olbernhau | 791.16 mi (1,273.24 km) |
| Silistra to Olching | 811.68 mi (1,306.27 km) |
| Silistra to Oldenburg | 1,064.85 mi (1,713.72 km) |
| Silistra to Oldenburg in Holstein | 1,015.94 mi (1,634.99 km) |
| Silistra to Olfen | 1,054.72 mi (1,697.41 km) |
| Silistra to Olpe | 1,019.15 mi (1,640.17 km) |
| Silistra to Olsberg | 1,001.37 mi (1,611.54 km) |
| Silistra to Oranienburg | 874.34 mi (1,407.12 km) |
| Silistra to Ortenberg | 953.23 mi (1,534.08 km) |
| Silistra to Oschatz | 821.88 mi (1,322.69 km) |
