| Onalaska to Olivares | 4,278.98 mi (6,886.36 km) |
| Onalaska to Olivenza | 4,186.25 mi (6,737.12 km) |
| Onalaska to Olot | 4,454.01 mi (7,168.03 km) |
| Onalaska to Onate | 4,217.40 mi (6,787.26 km) |
| Onalaska to Onda | 4,431.66 mi (7,132.06 km) |
| Onalaska to Onteniente | 4,464.36 mi (7,184.69 km) |
| Onalaska to Orihuela | 4,480.45 mi (7,210.59 km) |
| Onalaska to Osuna | 4,333.20 mi (6,973.61 km) |
| Onalaska to Ourense | 4,013.37 mi (6,458.90 km) |
| Onalaska to Oviedo | 4,061.24 mi (6,535.93 km) |
| Onalaska to Paiporta | 4,447.25 mi (7,157.16 km) |
| Onalaska to Pajara | 4,278.22 mi (6,885.12 km) |
| Onalaska to Palafolls | 4,486.19 mi (7,219.82 km) |
| Onalaska to Palafrugell | 4,492.60 mi (7,230.14 km) |
| Onalaska to Palamos | 4,494.22 mi (7,232.75 km) |
