| Cities | Distance |
|---|---|
| Heerlerbaan to Orbetello | 632.14 mi (1,017.34 km) |
| Heerlerbaan to Oria | 907.70 mi (1,460.81 km) |
| Heerlerbaan to Oristano | 767.66 mi (1,235.42 km) |
| Heerlerbaan to Orta Nova | 804.96 mi (1,295.46 km) |
| Heerlerbaan to Orte | 654.36 mi (1,053.09 km) |
| Heerlerbaan to Ortona | 709.66 mi (1,142.09 km) |
| Heerlerbaan to Orvieto | 632.27 mi (1,017.54 km) |
| Heerlerbaan to Orzinuovi | 418.80 mi (674.00 km) |
| Heerlerbaan to Osimo | 618.66 mi (995.64 km) |
| Heerlerbaan to Ospitaletto | 411.91 mi (662.90 km) |
| Heerlerbaan to Ostuni | 892.90 mi (1,436.99 km) |
| Heerlerbaan to Ottaviano | 802.05 mi (1,290.78 km) |
| Heerlerbaan to Ovada | 447.45 mi (720.10 km) |
| Heerlerbaan to Ozieri | 724.93 mi (1,166.66 km) |
| Heerlerbaan to Paceco | 946.07 mi (1,522.55 km) |