| Leichlingen to Oestrich-Winkel | 88.41 mi (142.28 km) |
| Leichlingen to Offenburg | 187.60 mi (301.92 km) |
| Leichlingen to Oftersheim | 139.12 mi (223.89 km) |
| Leichlingen to Ohrdruf | 162.89 mi (262.14 km) |
| Leichlingen to Ohringen | 172.09 mi (276.95 km) |
| Leichlingen to Olbernhau | 276.96 mi (445.73 km) |
| Leichlingen to Olching | 278.48 mi (448.17 km) |
| Leichlingen to Oldenburg | 148.98 mi (239.76 km) |
| Leichlingen to Oldenburg in Holstein | 273.00 mi (439.35 km) |
| Leichlingen to Olfen | 44.36 mi (71.40 km) |
| Leichlingen to Olpe | 36.12 mi (58.13 km) |
| Leichlingen to Olsberg | 65.46 mi (105.35 km) |
| Leichlingen to Oranienburg | 288.00 mi (463.49 km) |
| Leichlingen to Ortenberg | 103.49 mi (166.55 km) |
| Leichlingen to Oschatz | 263.86 mi (424.65 km) |
