| Whickham to Olympia Heights (Florida) | 4,339.52 mi (6,983.79 km) |
| Whickham to Omaha (Nebraska) | 4,113.95 mi (6,620.77 km) |
| Whickham to On Top of the World Designated Place (Florida) | 4,236.29 mi (6,817.65 km) |
| Whickham to Onalaska (Wisconsin) | 3,813.23 mi (6,136.80 km) |
| Whickham to Oneida (New York) | 3,286.16 mi (5,288.56 km) |
| Whickham to Oneonta (New York) | 3,292.20 mi (5,298.28 km) |
| Whickham to Ontario (California) | 5,217.77 mi (8,397.19 km) |
| Whickham to Ontario (Oregon) | 4,622.04 mi (7,438.45 km) |
| Whickham to Opa-locka (Florida) | 4,326.83 mi (6,963.36 km) |
| Whickham to Opelika (Alabama) | 4,169.32 mi (6,709.87 km) |
| Whickham to Opelousas (Louisiana) | 4,536.22 mi (7,300.34 km) |
| Whickham to Orange (California) | 5,238.12 mi (8,429.94 km) |
| Whickham to Orange (Texas) | 4,620.70 mi (7,436.30 km) |
| Whickham to Orange City (Florida) | 4,206.31 mi (6,769.41 km) |
| Whickham to Orangeburg (South Carolina) | 3,952.97 mi (6,361.69 km) |
