| Storm Lake to Olivares | 4,496.65 mi (7,236.66 km) |
| Storm Lake to Olivenza | 4,403.71 mi (7,087.09 km) |
| Storm Lake to Olot | 4,666.74 mi (7,510.40 km) |
| Storm Lake to Onate | 4,431.43 mi (7,131.70 km) |
| Storm Lake to Onda | 4,646.87 mi (7,478.41 km) |
| Storm Lake to Onteniente | 4,680.28 mi (7,532.18 km) |
| Storm Lake to Orihuela | 4,696.81 mi (7,558.78 km) |
| Storm Lake to Osuna | 4,550.75 mi (7,323.73 km) |
| Storm Lake to Ourense | 4,229.47 mi (6,806.68 km) |
| Storm Lake to Oviedo | 4,276.18 mi (6,881.84 km) |
| Storm Lake to Paiporta | 4,662.81 mi (7,504.06 km) |
| Storm Lake to Pajara | 4,494.29 mi (7,232.86 km) |
| Storm Lake to Palafolls | 4,699.19 mi (7,562.61 km) |
| Storm Lake to Palafrugell | 4,705.25 mi (7,572.36 km) |
| Storm Lake to Palamos | 4,706.94 mi (7,575.08 km) |
