| Calvizzano to Oberkirch | 606.05 mi (975.34 km) |
| Calvizzano to Obernburg am Main | 664.02 mi (1,068.64 km) |
| Calvizzano to Obernkirchen | 820.84 mi (1,321.01 km) |
| Calvizzano to Oberschleissheim | 523.82 mi (843.01 km) |
| Calvizzano to Oberstdorf | 489.48 mi (787.75 km) |
| Calvizzano to Obertraubling | 565.90 mi (910.72 km) |
| Calvizzano to Obertshausen | 683.88 mi (1,100.60 km) |
| Calvizzano to Oberursel | 697.19 mi (1,122.02 km) |
| Calvizzano to Ochsenfurt | 636.58 mi (1,024.48 km) |
| Calvizzano to Ochsenhausen | 537.51 mi (865.05 km) |
| Calvizzano to Ochtrup | 847.91 mi (1,364.58 km) |
| Calvizzano to Odenthal | 777.20 mi (1,250.78 km) |
| Calvizzano to Oelde | 807.64 mi (1,299.77 km) |
| Calvizzano to Oelsnitz | 664.64 mi (1,069.64 km) |
| Calvizzano to Oer-Erkenschwick | 811.83 mi (1,306.51 km) |
