| Madison to Olivares | 4,221.62 mi (6,794.05 km) |
| Madison to Olivenza | 4,130.02 mi (6,646.63 km) |
| Madison to Olot | 4,410.89 mi (7,098.64 km) |
| Madison to Onate | 4,171.66 mi (6,713.63 km) |
| Madison to Onda | 4,382.90 mi (7,053.60 km) |
| Madison to Onteniente | 4,413.63 mi (7,103.05 km) |
| Madison to Orihuela | 4,428.37 mi (7,126.77 km) |
| Madison to Osuna | 4,276.43 mi (6,882.25 km) |
| Madison to Ourense | 3,962.32 mi (6,376.73 km) |
| Madison to Oviedo | 4,013.39 mi (6,458.93 km) |
| Madison to Paiporta | 4,397.57 mi (7,077.21 km) |
| Madison to Pajara | 4,202.35 mi (6,763.02 km) |
| Madison to Palafolls | 4,442.51 mi (7,149.53 km) |
| Madison to Palafrugell | 4,449.64 mi (7,161.01 km) |
| Madison to Palamos | 4,451.13 mi (7,163.40 km) |
