| Cities | Distance |
|---|---|
| Hamm to Oestrich-Winkel | 116.58 mi (187.62 km) |
| Hamm to Offenburg | 222.31 mi (357.77 km) |
| Hamm to Oftersheim | 163.31 mi (262.82 km) |
| Hamm to Ohrdruf | 139.24 mi (224.09 km) |
| Hamm to Ohringen | 186.87 mi (300.74 km) |
| Hamm to Olbernhau | 249.00 mi (400.73 km) |
| Hamm to Olching | 286.53 mi (461.13 km) |
| Hamm to Oldenburg | 102.30 mi (164.63 km) |
| Hamm to Oldenburg in Holstein | 221.21 mi (356.00 km) |
| Hamm to Olfen | 18.70 mi (30.10 km) |
| Hamm to Olpe | 46.06 mi (74.13 km) |
| Hamm to Olsberg | 36.77 mi (59.17 km) |
| Hamm to Oranienburg | 241.01 mi (387.86 km) |
| Hamm to Ortenberg | 106.35 mi (171.15 km) |
| Hamm to Oschatz | 229.08 mi (368.66 km) |