| Prato to Oberkirch | 352.20 mi (566.81 km) |
| Prato to Obernburg am Main | 421.93 mi (679.04 km) |
| Prato to Obernkirchen | 586.49 mi (943.86 km) |
| Prato to Oberschleissheim | 302.72 mi (487.18 km) |
| Prato to Oberstdorf | 247.00 mi (397.50 km) |
| Prato to Obertraubling | 355.01 mi (571.33 km) |
| Prato to Obertshausen | 440.47 mi (708.86 km) |
| Prato to Oberursel | 452.59 mi (728.38 km) |
| Prato to Ochsenfurt | 401.57 mi (646.27 km) |
| Prato to Ochsenhausen | 294.79 mi (474.42 km) |
| Prato to Ochtrup | 602.60 mi (969.79 km) |
| Prato to Odenthal | 527.81 mi (849.42 km) |
| Prato to Oelde | 566.07 mi (910.99 km) |
| Prato to Oelsnitz | 454.36 mi (731.23 km) |
| Prato to Oer-Erkenschwick | 565.02 mi (909.31 km) |
