| Flawil to Olympia Heights (Florida) | 4,910.29 mi (7,902.35 km) |
| Flawil to Omaha (Nebraska) | 4,795.74 mi (7,718.00 km) |
| Flawil to On Top of the World Designated Place (Florida) | 4,833.38 mi (7,778.57 km) |
| Flawil to Onalaska (Wisconsin) | 4,492.67 mi (7,230.25 km) |
| Flawil to Oneida (New York) | 3,926.82 mi (6,319.61 km) |
| Flawil to Oneonta (New York) | 3,928.01 mi (6,321.51 km) |
| Flawil to Ontario (California) | 5,916.90 mi (9,522.33 km) |
| Flawil to Ontario (Oregon) | 5,322.48 mi (8,565.71 km) |
| Flawil to Opa-locka (Florida) | 4,898.09 mi (7,882.72 km) |
| Flawil to Opelika (Alabama) | 4,795.09 mi (7,716.95 km) |
| Flawil to Opelousas (Louisiana) | 5,177.66 mi (8,332.64 km) |
| Flawil to Orange (California) | 5,937.27 mi (9,555.11 km) |
| Flawil to Orange (Texas) | 5,266.39 mi (8,475.44 km) |
| Flawil to Orange City (Florida) | 4,798.03 mi (7,721.69 km) |
| Flawil to Orangeburg (South Carolina) | 4,565.09 mi (7,346.80 km) |
