| Acqui Terme to Oberkirch | 267.13 mi (429.91 km) |
| Acqui Terme to Obernburg am Main | 358.18 mi (576.43 km) |
| Acqui Terme to Obernkirchen | 525.28 mi (845.35 km) |
| Acqui Terme to Oberschleissheim | 287.55 mi (462.76 km) |
| Acqui Terme to Oberstdorf | 207.86 mi (334.52 km) |
| Acqui Terme to Obertraubling | 344.02 mi (553.65 km) |
| Acqui Terme to Obertshausen | 372.84 mi (600.03 km) |
| Acqui Terme to Oberursel | 381.93 mi (614.65 km) |
| Acqui Terme to Ochsenfurt | 351.74 mi (566.08 km) |
| Acqui Terme to Ochsenhausen | 245.01 mi (394.30 km) |
| Acqui Terme to Ochtrup | 523.50 mi (842.50 km) |
| Acqui Terme to Odenthal | 443.67 mi (714.01 km) |
| Acqui Terme to Oelde | 494.73 mi (796.19 km) |
| Acqui Terme to Oelsnitz | 432.37 mi (695.84 km) |
| Acqui Terme to Oer-Erkenschwick | 484.55 mi (779.81 km) |
