| Zagarolo to Odessa (Texas) | 5,889.11 mi (9,477.61 km) |
| Zagarolo to Ogden (Utah) | 5,743.23 mi (9,242.84 km) |
| Zagarolo to Oildale (California) | 6,291.77 mi (10,125.62 km) |
| Zagarolo to Ojus (Florida) | 5,189.73 mi (8,352.07 km) |
| Zagarolo to Okemos (Michigan) | 4,661.19 mi (7,501.47 km) |
| Zagarolo to Oklahoma City (Oklahoma) | 5,517.99 mi (8,880.35 km) |
| Zagarolo to Okmulgee (Oklahoma) | 5,450.44 mi (8,771.63 km) |
| Zagarolo to Olathe (Kansas) | 5,247.55 mi (8,445.11 km) |
| Zagarolo to Old Jamestown (Missouri) | 5,067.83 mi (8,155.88 km) |
| Zagarolo to Oldsmar (Florida) | 5,215.72 mi (8,393.89 km) |
| Zagarolo to Olean (New York) | 4,437.76 mi (7,141.88 km) |
| Zagarolo to Olive Branch (Mississippi) | 5,225.68 mi (8,409.92 km) |
| Zagarolo to Olivehurst (California) | 6,155.66 mi (9,906.57 km) |
| Zagarolo to Olney (Maryland) | 4,493.68 mi (7,231.88 km) |
| Zagarolo to Olympia (Washington) | 5,724.08 mi (9,212.01 km) |
