| Priolo Gargallo to Oberkirch | 862.86 mi (1,388.64 km) |
| Priolo Gargallo to Obernburg am Main | 925.74 mi (1,489.84 km) |
| Priolo Gargallo to Obernkirchen | 1,084.00 mi (1,744.53 km) |
| Priolo Gargallo to Oberschleissheim | 787.25 mi (1,266.95 km) |
| Priolo Gargallo to Oberstdorf | 750.40 mi (1,207.65 km) |
| Priolo Gargallo to Obertraubling | 829.15 mi (1,334.40 km) |
| Priolo Gargallo to Obertshausen | 945.34 mi (1,521.38 km) |
| Priolo Gargallo to Oberursel | 958.37 mi (1,542.35 km) |
| Priolo Gargallo to Ochsenfurt | 899.39 mi (1,447.43 km) |
| Priolo Gargallo to Ochsenhausen | 798.64 mi (1,285.29 km) |
| Priolo Gargallo to Ochtrup | 1,109.17 mi (1,785.03 km) |
| Priolo Gargallo to Odenthal | 1,036.83 mi (1,668.61 km) |
| Priolo Gargallo to Oelde | 1,069.77 mi (1,721.62 km) |
| Priolo Gargallo to Oelsnitz | 927.56 mi (1,492.76 km) |
| Priolo Gargallo to Oer-Erkenschwick | 1,072.54 mi (1,726.09 km) |
