| Marcon to Oerlinghausen | 472.79 mi (760.88 km) |
| Marcon to Oestrich-Winkel | 366.20 mi (589.34 km) |
| Marcon to Offenburg | 287.67 mi (462.95 km) |
| Marcon to Oftersheim | 315.56 mi (507.85 km) |
| Marcon to Ohrdruf | 371.44 mi (597.77 km) |
| Marcon to Ohringen | 283.86 mi (456.83 km) |
| Marcon to Olbernhau | 356.43 mi (573.62 km) |
| Marcon to Olching | 188.60 mi (303.52 km) |
| Marcon to Oldenburg | 555.47 mi (893.94 km) |
| Marcon to Oldenburg in Holstein | 607.51 mi (977.69 km) |
| Marcon to Olfen | 481.06 mi (774.20 km) |
| Marcon to Olpe | 429.46 mi (691.16 km) |
| Marcon to Olsberg | 436.81 mi (702.98 km) |
| Marcon to Oranienburg | 499.27 mi (803.49 km) |
| Marcon to Ortenberg | 364.04 mi (585.87 km) |
