| Cities | Distance |
|---|---|
| Marl to Oestrich-Winkel | 121.44 mi (195.43 km) |
| Marl to Offenburg | 224.04 mi (360.56 km) |
| Marl to Oftersheim | 171.24 mi (275.59 km) |
| Marl to Ohrdruf | 166.76 mi (268.38 km) |
| Marl to Ohringen | 200.10 mi (322.03 km) |
| Marl to Olbernhau | 277.96 mi (447.34 km) |
| Marl to Olching | 303.64 mi (488.66 km) |
| Marl to Oldenburg | 112.05 mi (180.33 km) |
| Marl to Oldenburg in Holstein | 240.04 mi (386.31 km) |
| Marl to Olfen | 11.93 mi (19.20 km) |
| Marl to Olpe | 54.53 mi (87.76 km) |
| Marl to Olsberg | 62.71 mi (100.92 km) |
| Marl to Oranienburg | 269.70 mi (434.04 km) |
| Marl to Ortenberg | 123.71 mi (199.09 km) |
| Marl to Oschatz | 258.92 mi (416.69 km) |