| Schwechat to Olympia Heights (Florida) | 5,210.31 mi (8,385.18 km) |
| Schwechat to Omaha (Nebraska) | 5,016.39 mi (8,073.10 km) |
| Schwechat to On Top of the World Designated Place (Florida) | 5,121.96 mi (8,243.00 km) |
| Schwechat to Onalaska (Wisconsin) | 4,717.03 mi (7,591.33 km) |
| Schwechat to Oneida (New York) | 4,189.03 mi (6,741.59 km) |
| Schwechat to Oneonta (New York) | 4,193.58 mi (6,748.92 km) |
| Schwechat to Ontario (California) | 6,090.91 mi (9,802.38 km) |
| Schwechat to Ontario (Oregon) | 5,471.24 mi (8,805.11 km) |
| Schwechat to Opa-locka (Florida) | 5,197.90 mi (8,365.21 km) |
| Schwechat to Opelika (Alabama) | 5,067.99 mi (8,156.14 km) |
| Schwechat to Opelousas (Louisiana) | 5,440.14 mi (8,755.06 km) |
| Schwechat to Orange (California) | 6,111.11 mi (9,834.88 km) |
| Schwechat to Orange (Texas) | 5,525.64 mi (8,892.65 km) |
| Schwechat to Orange City (Florida) | 5,089.08 mi (8,190.08 km) |
| Schwechat to Orangeburg (South Carolina) | 4,845.68 mi (7,798.37 km) |
