| Uster to Olympia Heights (Florida) | 4,890.00 mi (7,869.69 km) |
| Uster to Omaha (Nebraska) | 4,780.69 mi (7,693.77 km) |
| Uster to On Top of the World Designated Place (Florida) | 4,813.83 mi (7,747.12 km) |
| Uster to Onalaska (Wisconsin) | 4,477.42 mi (7,205.71 km) |
| Uster to Oneida (New York) | 3,909.12 mi (6,291.13 km) |
| Uster to Oneonta (New York) | 3,910.08 mi (6,292.67 km) |
| Uster to Ontario (California) | 5,904.72 mi (9,502.73 km) |
| Uster to Ontario (Oregon) | 5,312.10 mi (8,548.99 km) |
| Uster to Opa-locka (Florida) | 4,877.81 mi (7,850.08 km) |
| Uster to Opelika (Alabama) | 4,776.57 mi (7,687.15 km) |
| Uster to Opelousas (Louisiana) | 5,159.79 mi (8,303.88 km) |
| Uster to Orange (California) | 5,925.10 mi (9,535.53 km) |
| Uster to Orange (Texas) | 5,248.72 mi (8,447.00 km) |
| Uster to Orange City (Florida) | 4,778.33 mi (7,689.98 km) |
| Uster to Orangeburg (South Carolina) | 4,546.09 mi (7,316.23 km) |
