| Geilenkirchen to Olivenza | 1,064.07 mi (1,712.45 km) |
| Geilenkirchen to Olot | 630.67 mi (1,014.96 km) |
| Geilenkirchen to Onate | 678.85 mi (1,092.51 km) |
| Geilenkirchen to Onda | 819.98 mi (1,319.62 km) |
| Geilenkirchen to Onteniente | 900.36 mi (1,449.00 km) |
| Geilenkirchen to Orihuela | 954.47 mi (1,536.07 km) |
| Geilenkirchen to Osuna | 1,097.24 mi (1,765.84 km) |
| Geilenkirchen to Ourense | 889.08 mi (1,430.84 km) |
| Geilenkirchen to Oviedo | 767.68 mi (1,235.47 km) |
| Geilenkirchen to Paiporta | 857.53 mi (1,380.05 km) |
| Geilenkirchen to Pajara | 1,883.35 mi (3,030.97 km) |
| Geilenkirchen to Palafolls | 661.92 mi (1,065.26 km) |
| Geilenkirchen to Palafrugell | 640.66 mi (1,031.04 km) |
| Geilenkirchen to Palamos | 645.86 mi (1,039.41 km) |
| Geilenkirchen to Palencia | 797.75 mi (1,283.86 km) |
