| Wauwatosa to Olivares | 4,160.30 mi (6,695.35 km) |
| Wauwatosa to Olivenza | 4,069.10 mi (6,548.59 km) |
| Wauwatosa to Olot | 4,354.90 mi (7,008.54 km) |
| Wauwatosa to Onate | 4,114.66 mi (6,621.91 km) |
| Wauwatosa to Onda | 4,324.68 mi (6,959.90 km) |
| Wauwatosa to Onteniente | 4,354.66 mi (7,008.14 km) |
| Wauwatosa to Orihuela | 4,368.89 mi (7,031.04 km) |
| Wauwatosa to Osuna | 4,215.29 mi (6,783.86 km) |
| Wauwatosa to Ourense | 3,903.31 mi (6,281.76 km) |
| Wauwatosa to Oviedo | 3,955.60 mi (6,365.92 km) |
| Wauwatosa to Paiporta | 4,339.00 mi (6,982.95 km) |
| Wauwatosa to Pajara | 4,135.71 mi (6,655.78 km) |
| Wauwatosa to Palafolls | 4,386.29 mi (7,059.05 km) |
| Wauwatosa to Palafrugell | 4,393.72 mi (7,071.00 km) |
| Wauwatosa to Palamos | 4,395.14 mi (7,073.30 km) |
