| Cities | Distance |
|---|---|
| Hamm to Novi di Modena | 489.98 mi (788.55 km) |
| Hamm to Novi Ligure | 480.47 mi (773.24 km) |
| Hamm to Nuoro | 788.68 mi (1,269.25 km) |
| Hamm to Occhiobello | 498.02 mi (801.49 km) |
| Hamm to Oderzo | 459.91 mi (740.16 km) |
| Hamm to Oggiono | 413.57 mi (665.58 km) |
| Hamm to Olbia | 748.17 mi (1,204.07 km) |
| Hamm to Oleggio | 421.96 mi (679.08 km) |
| Hamm to Olgiate Comasco | 410.99 mi (661.43 km) |
| Hamm to Olgiate Olona | 420.83 mi (677.25 km) |
| Hamm to Omegna | 402.00 mi (646.95 km) |
| Hamm to Opera | 439.95 mi (708.04 km) |
| Hamm to Oppeano | 467.08 mi (751.69 km) |
| Hamm to Orbassano | 461.44 mi (742.62 km) |
| Hamm to Orbetello | 658.20 mi (1,059.26 km) |