| Winston-Salem to Olivares | 3,989.69 mi (6,420.79 km) |
| Winston-Salem to Olivenza | 3,908.18 mi (6,289.60 km) |
| Winston-Salem to Olot | 4,275.93 mi (6,881.44 km) |
| Winston-Salem to Onate | 4,023.50 mi (6,475.20 km) |
| Winston-Salem to Onda | 4,209.19 mi (6,774.03 km) |
| Winston-Salem to Onteniente | 4,225.37 mi (6,800.08 km) |
| Winston-Salem to Orihuela | 4,230.19 mi (6,807.83 km) |
| Winston-Salem to Osuna | 4,047.65 mi (6,514.07 km) |
| Winston-Salem to Ourense | 3,781.37 mi (6,085.52 km) |
| Winston-Salem to Oviedo | 3,854.02 mi (6,202.45 km) |
| Winston-Salem to Paiporta | 4,217.06 mi (6,786.70 km) |
| Winston-Salem to Pajara | 3,830.92 mi (6,165.26 km) |
| Winston-Salem to Palafolls | 4,303.03 mi (6,925.05 km) |
| Winston-Salem to Palafrugell | 4,315.00 mi (6,944.32 km) |
| Winston-Salem to Palamos | 4,315.51 mi (6,945.14 km) |
