| Oldenzaal to Olivenza | 1,157.04 mi (1,862.07 km) |
| Oldenzaal to Olot | 730.23 mi (1,175.20 km) |
| Oldenzaal to Onate | 773.62 mi (1,245.03 km) |
| Oldenzaal to Onda | 919.40 mi (1,479.64 km) |
| Oldenzaal to Onteniente | 999.86 mi (1,609.11 km) |
| Oldenzaal to Orihuela | 1,053.96 mi (1,696.18 km) |
| Oldenzaal to Osuna | 1,194.08 mi (1,921.68 km) |
| Oldenzaal to Ourense | 974.04 mi (1,567.57 km) |
| Oldenzaal to Oviedo | 854.42 mi (1,375.06 km) |
| Oldenzaal to Paiporta | 956.99 mi (1,540.13 km) |
| Oldenzaal to Pajara | 1,976.45 mi (3,180.78 km) |
| Oldenzaal to Palafolls | 761.29 mi (1,225.18 km) |
| Oldenzaal to Palafrugell | 739.80 mi (1,190.59 km) |
| Oldenzaal to Palamos | 745.01 mi (1,198.98 km) |
| Oldenzaal to Palencia | 890.25 mi (1,432.73 km) |
