| Urdorf to Olympia Heights (Florida) | 4,876.34 mi (7,847.71 km) |
| Urdorf to Omaha (Nebraska) | 4,768.57 mi (7,674.27 km) |
| Urdorf to On Top of the World Designated Place (Florida) | 4,800.31 mi (7,725.36 km) |
| Urdorf to Onalaska (Wisconsin) | 4,465.23 mi (7,186.09 km) |
| Urdorf to Oneida (New York) | 3,896.10 mi (6,270.16 km) |
| Urdorf to Oneonta (New York) | 3,896.99 mi (6,271.59 km) |
| Urdorf to Ontario (California) | 5,893.77 mi (9,485.11 km) |
| Urdorf to Ontario (Oregon) | 5,301.95 mi (8,532.66 km) |
| Urdorf to Opa-locka (Florida) | 4,864.15 mi (7,828.09 km) |
| Urdorf to Opelika (Alabama) | 4,763.30 mi (7,665.80 km) |
| Urdorf to Opelousas (Louisiana) | 5,146.70 mi (8,282.82 km) |
| Urdorf to Orange (California) | 5,914.15 mi (9,517.90 km) |
| Urdorf to Orange (Texas) | 5,235.70 mi (8,426.04 km) |
| Urdorf to Orange City (Florida) | 4,764.77 mi (7,668.16 km) |
| Urdorf to Orangeburg (South Carolina) | 4,532.70 mi (7,294.67 km) |
