| Heswall to Olivares | 1,109.03 mi (1,784.81 km) |
| Heswall to Olivenza | 1,029.33 mi (1,656.54 km) |
| Heswall to Olot | 812.04 mi (1,306.86 km) |
| Heswall to Onate | 711.98 mi (1,145.82 km) |
| Heswall to Onda | 933.01 mi (1,501.54 km) |
| Heswall to Onteniente | 1,009.18 mi (1,624.12 km) |
| Heswall to Orihuela | 1,058.13 mi (1,702.89 km) |
| Heswall to Osuna | 1,116.17 mi (1,796.30 km) |
| Heswall to Ourense | 790.49 mi (1,272.17 km) |
| Heswall to Oviedo | 700.03 mi (1,126.59 km) |
| Heswall to Paiporta | 968.69 mi (1,558.96 km) |
| Heswall to Pajara | 1,814.25 mi (2,919.75 km) |
| Heswall to Palafolls | 849.85 mi (1,367.71 km) |
| Heswall to Palafrugell | 839.80 mi (1,351.53 km) |
| Heswall to Palamos | 843.97 mi (1,358.24 km) |
