| Del Rio to Oberkirch | 5,501.94 mi (8,854.52 km) |
| Del Rio to Obernburg am Main | 5,492.22 mi (8,838.87 km) |
| Del Rio to Obernkirchen | 5,399.05 mi (8,688.93 km) |
| Del Rio to Oberschleissheim | 5,644.98 mi (9,084.72 km) |
| Del Rio to Oberstdorf | 5,629.54 mi (9,059.87 km) |
| Del Rio to Obertraubling | 5,638.41 mi (9,074.14 km) |
| Del Rio to Obertshausen | 5,472.15 mi (8,806.58 km) |
| Del Rio to Oberursel | 5,457.48 mi (8,782.97 km) |
| Del Rio to Ochsenfurt | 5,533.82 mi (8,905.82 km) |
| Del Rio to Ochsenhausen | 5,590.90 mi (8,997.68 km) |
| Del Rio to Ochtrup | 5,332.53 mi (8,581.88 km) |
| Del Rio to Odenthal | 5,372.66 mi (8,646.47 km) |
| Del Rio to Oelde | 5,380.77 mi (8,659.51 km) |
| Del Rio to Oelsnitz | 5,579.82 mi (8,979.86 km) |
| Del Rio to Oer-Erkenschwick | 5,355.29 mi (8,618.51 km) |
