| Helena to Olivares | 5,044.49 mi (8,118.32 km) |
| Helena to Olivenza | 4,945.51 mi (7,959.02 km) |
| Helena to Olot | 5,108.80 mi (8,221.82 km) |
| Helena to Onate | 4,898.42 mi (7,883.24 km) |
| Helena to Onda | 5,130.22 mi (8,256.30 km) |
| Helena to Onteniente | 5,177.07 mi (8,331.69 km) |
| Helena to Orihuela | 5,203.01 mi (8,373.43 km) |
| Helena to Osuna | 5,093.38 mi (8,197.00 km) |
| Helena to Ourense | 4,738.94 mi (7,626.59 km) |
| Helena to Oviedo | 4,761.99 mi (7,663.69 km) |
| Helena to Paiporta | 5,152.44 mi (8,292.05 km) |
| Helena to Pajara | 5,170.30 mi (8,320.79 km) |
| Helena to Palafolls | 5,144.49 mi (8,279.26 km) |
| Helena to Palafrugell | 5,145.14 mi (8,280.31 km) |
| Helena to Palamos | 5,147.79 mi (8,284.56 km) |
