| Syosset to Olympia (Washington) | 2,453.38 mi (3,948.33 km) |
| Syosset to Olympia Heights (Florida) | 1,114.07 mi (1,792.92 km) |
| Syosset to Omaha (Nebraska) | 1,172.33 mi (1,886.68 km) |
| Syosset to On Top of the World Designated Place (Florida) | 948.55 mi (1,526.55 km) |
| Syosset to Onalaska (Wisconsin) | 926.69 mi (1,491.37 km) |
| Syosset to Oneida (New York) | 191.64 mi (308.42 km) |
| Syosset to Oneonta (New York) | 139.13 mi (223.91 km) |
| Syosset to Ontario (California) | 2,438.52 mi (3,924.42 km) |
| Syosset to Ontario (Oregon) | 2,202.68 mi (3,544.88 km) |
| Syosset to Opa-locka (Florida) | 1,100.90 mi (1,771.73 km) |
| Syosset to Opelika (Alabama) | 864.44 mi (1,391.18 km) |
| Syosset to Opelousas (Louisiana) | 1,257.94 mi (2,024.45 km) |
| Syosset to Orange (California) | 2,456.49 mi (3,953.34 km) |
| Syosset to Orange (Texas) | 1,353.25 mi (2,177.85 km) |
| Syosset to Orange City (Florida) | 931.04 mi (1,498.36 km) |
