| Zagarolo to Oakley (California) | 6,223.22 mi (10,015.31 km) |
| Zagarolo to Oakton (Virginia) | 4,513.99 mi (7,264.57 km) |
| Zagarolo to Oakville (Missouri) | 5,086.95 mi (8,186.65 km) |
| Zagarolo to Oatfield (Oregon) | 5,812.31 mi (9,354.02 km) |
| Zagarolo to Ocala (Florida) | 5,141.69 mi (8,274.75 km) |
| Zagarolo to Ocean Acres (New Jersey) | 4,347.20 mi (6,996.14 km) |
| Zagarolo to Ocean City (New Jersey) | 4,379.59 mi (7,048.27 km) |
| Zagarolo to Ocean Pines (Maryland) | 4,438.06 mi (7,142.37 km) |
| Zagarolo to Ocean Pointe (Hawaii) | 8,034.71 mi (12,930.62 km) |
| Zagarolo to Ocean Springs (Mississippi) | 5,388.25 mi (8,671.56 km) |
| Zagarolo to Oceanside (California) | 6,362.42 mi (10,239.33 km) |
| Zagarolo to Oceanside (New York) | 4,285.22 mi (6,896.39 km) |
| Zagarolo to Ocoee (Florida) | 5,139.20 mi (8,270.74 km) |
| Zagarolo to Oconomowoc (Wisconsin) | 4,807.71 mi (7,737.26 km) |
| Zagarolo to Odenton (Maryland) | 4,480.18 mi (7,210.16 km) |
