| Pittsburg to Nasaud | 6,187.20 mi (9,957.34 km) |
| Pittsburg to Navodari | 6,457.19 mi (10,391.84 km) |
| Pittsburg to Negresti-Oas | 6,130.62 mi (9,866.27 km) |
| Pittsburg to Nehoiu | 6,346.44 mi (10,213.61 km) |
| Pittsburg to Ocna Mures | 6,231.24 mi (10,028.22 km) |
| Pittsburg to Odobesti | 6,335.53 mi (10,196.05 km) |
| Pittsburg to Odorheiu Secuiesc | 6,265.89 mi (10,083.98 km) |
| Pittsburg to Oltenita | 6,432.84 mi (10,352.66 km) |
| Pittsburg to Onesti | 6,298.67 mi (10,136.74 km) |
| Pittsburg to Oradea | 6,147.55 mi (9,893.52 km) |
| Pittsburg to Orastie | 6,250.49 mi (10,059.19 km) |
| Pittsburg to Oravita | 6,266.46 mi (10,084.89 km) |
| Pittsburg to Orsova | 6,301.88 mi (10,141.89 km) |
| Pittsburg to Otelu Rosu | 6,252.24 mi (10,062.01 km) |
| Pittsburg to Otopeni | 6,392.09 mi (10,287.08 km) |
