| Boppard to Olivenza | 1,073.76 mi (1,728.05 km) |
| Boppard to Olot | 606.94 mi (976.77 km) |
| Boppard to Onate | 686.43 mi (1,104.71 km) |
| Boppard to Onda | 805.28 mi (1,295.97 km) |
| Boppard to Onteniente | 884.44 mi (1,423.37 km) |
| Boppard to Orihuela | 938.41 mi (1,510.22 km) |
| Boppard to Osuna | 1,095.78 mi (1,763.49 km) |
| Boppard to Ourense | 914.70 mi (1,472.07 km) |
| Boppard to Oviedo | 791.32 mi (1,273.51 km) |
| Boppard to Paiporta | 842.19 mi (1,355.37 km) |
| Boppard to Pajara | 1,890.75 mi (3,042.87 km) |
| Boppard to Palafolls | 635.30 mi (1,022.41 km) |
| Boppard to Palafrugell | 612.11 mi (985.09 km) |
| Boppard to Palamos | 617.36 mi (993.54 km) |
| Boppard to Palencia | 810.03 mi (1,303.61 km) |
