| Hallstahammar to Orbetello | 1,206.01 mi (1,940.89 km) |
| Hallstahammar to Oria | 1,322.19 mi (2,127.86 km) |
| Hallstahammar to Oristano | 1,401.95 mi (2,256.22 km) |
| Hallstahammar to Orta Nova | 1,263.64 mi (2,033.64 km) |
| Hallstahammar to Orte | 1,196.72 mi (1,925.94 km) |
| Hallstahammar to Ortona | 1,195.61 mi (1,924.15 km) |
| Hallstahammar to Orvieto | 1,180.70 mi (1,900.15 km) |
| Hallstahammar to Orzinuovi | 1,016.45 mi (1,635.82 km) |
| Hallstahammar to Osimo | 1,120.79 mi (1,803.73 km) |
| Hallstahammar to Ospitaletto | 1,004.50 mi (1,616.59 km) |
| Hallstahammar to Ostuni | 1,305.99 mi (2,101.78 km) |
| Hallstahammar to Ottaviano | 1,298.90 mi (2,090.38 km) |
| Hallstahammar to Ovada | 1,082.26 mi (1,741.72 km) |
| Hallstahammar to Ozieri | 1,351.72 mi (2,175.39 km) |
| Hallstahammar to Paceco | 1,503.62 mi (2,419.84 km) |
