| Alcazar de San Juan to Oberkirch | 842.52 mi (1,355.91 km) |
| Alcazar de San Juan to Obernburg am Main | 940.07 mi (1,512.90 km) |
| Alcazar de San Juan to Obernkirchen | 1,065.19 mi (1,714.26 km) |
| Alcazar de San Juan to Oberschleissheim | 954.00 mi (1,535.31 km) |
| Alcazar de San Juan to Oberstdorf | 871.92 mi (1,403.22 km) |
| Alcazar de San Juan to Obertraubling | 1,004.77 mi (1,617.02 km) |
| Alcazar de San Juan to Obertshausen | 941.87 mi (1,515.79 km) |
| Alcazar de San Juan to Oberursel | 941.13 mi (1,514.60 km) |
| Alcazar de San Juan to Ochsenfurt | 960.74 mi (1,546.16 km) |
| Alcazar de San Juan to Ochsenhausen | 886.42 mi (1,426.55 km) |
| Alcazar de San Juan to Ochtrup | 1,013.98 mi (1,631.84 km) |
| Alcazar de San Juan to Odenthal | 945.50 mi (1,521.63 km) |
| Alcazar de San Juan to Oelde | 1,016.40 mi (1,635.73 km) |
| Alcazar de San Juan to Oelsnitz | 1,065.82 mi (1,715.27 km) |
| Alcazar de San Juan to Oer-Erkenschwick | 983.18 mi (1,582.28 km) |
