| North Wantagh to Olympia Heights (Florida) | 1,106.46 mi (1,780.67 km) |
| North Wantagh to Omaha (Nebraska) | 1,173.27 mi (1,888.20 km) |
| North Wantagh to On Top of the World Designated Place (Florida) | 941.66 mi (1,515.45 km) |
| North Wantagh to Onalaska (Wisconsin) | 929.05 mi (1,495.17 km) |
| North Wantagh to Oneida (New York) | 198.18 mi (318.93 km) |
| North Wantagh to Oneonta (New York) | 145.66 mi (234.42 km) |
| North Wantagh to Ontario (California) | 2,438.67 mi (3,924.67 km) |
| North Wantagh to Ontario (Oregon) | 2,205.21 mi (3,548.94 km) |
| North Wantagh to Opa-locka (Florida) | 1,093.28 mi (1,759.47 km) |
| North Wantagh to Opelika (Alabama) | 859.31 mi (1,382.93 km) |
| North Wantagh to Opelousas (Louisiana) | 1,253.77 mi (2,017.75 km) |
| North Wantagh to Orange (California) | 2,456.61 mi (3,953.53 km) |
| North Wantagh to Orange (Texas) | 1,349.32 mi (2,171.52 km) |
| North Wantagh to Orange City (Florida) | 923.89 mi (1,486.85 km) |
| North Wantagh to Orangeburg (South Carolina) | 641.59 mi (1,032.55 km) |
