| Karlsfeld to Oestrich-Winkel | 199.38 mi (320.88 km) |
| Karlsfeld to Offenburg | 163.17 mi (262.60 km) |
| Karlsfeld to Oftersheim | 153.49 mi (247.02 km) |
| Karlsfeld to Ohrdruf | 183.41 mi (295.16 km) |
| Karlsfeld to Ohringen | 112.49 mi (181.04 km) |
| Karlsfeld to Olbernhau | 188.90 mi (304.00 km) |
| Karlsfeld to Olching | 7.00 mi (11.27 km) |
| Karlsfeld to Oldenburg | 368.93 mi (593.73 km) |
| Karlsfeld to Oldenburg in Holstein | 421.07 mi (677.64 km) |
| Karlsfeld to Olfen | 302.25 mi (486.42 km) |
| Karlsfeld to Olpe | 252.69 mi (406.66 km) |
| Karlsfeld to Olsberg | 254.08 mi (408.90 km) |
| Karlsfeld to Oranienburg | 323.01 mi (519.84 km) |
| Karlsfeld to Ortenberg | 183.43 mi (295.20 km) |
| Karlsfeld to Oschatz | 225.27 mi (362.54 km) |
