| Pirot to Odessa (Texas) | 6,192.63 mi (9,966.07 km) |
| Pirot to Ogden (Utah) | 5,957.68 mi (9,587.97 km) |
| Pirot to Oildale (California) | 6,493.73 mi (10,450.65 km) |
| Pirot to Ojus (Florida) | 5,603.79 mi (9,018.42 km) |
| Pirot to Okemos (Michigan) | 4,982.53 mi (8,018.61 km) |
| Pirot to Oklahoma City (Oklahoma) | 5,826.33 mi (9,376.57 km) |
| Pirot to Okmulgee (Oklahoma) | 5,764.40 mi (9,276.91 km) |
| Pirot to Olathe (Kansas) | 5,550.39 mi (8,932.49 km) |
| Pirot to Old Jamestown (Missouri) | 5,388.59 mi (8,672.10 km) |
| Pirot to Oldsmar (Florida) | 5,613.45 mi (9,033.98 km) |
| Pirot to Olean (New York) | 4,782.16 mi (7,696.14 km) |
| Pirot to Olive Branch (Mississippi) | 5,567.17 mi (8,959.50 km) |
| Pirot to Olivehurst (California) | 6,328.61 mi (10,184.91 km) |
| Pirot to Olney (Maryland) | 4,858.22 mi (7,818.55 km) |
| Pirot to Olympia (Washington) | 5,858.01 mi (9,427.55 km) |
