| Upper Grand Lagoon to Nasaud | 5,553.26 mi (8,937.11 km) |
| Upper Grand Lagoon to Navodari | 5,837.54 mi (9,394.61 km) |
| Upper Grand Lagoon to Negresti-Oas | 5,492.62 mi (8,839.52 km) |
| Upper Grand Lagoon to Nehoiu | 5,704.29 mi (9,180.17 km) |
| Upper Grand Lagoon to Ocna Mures | 5,566.89 mi (8,959.05 km) |
| Upper Grand Lagoon to Odobesti | 5,717.06 mi (9,200.72 km) |
| Upper Grand Lagoon to Odorheiu Secuiesc | 5,626.33 mi (9,054.71 km) |
| Upper Grand Lagoon to Oltenita | 5,769.17 mi (9,284.59 km) |
| Upper Grand Lagoon to Onesti | 5,685.39 mi (9,149.76 km) |
| Upper Grand Lagoon to Oradea | 5,464.34 mi (8,794.01 km) |
| Upper Grand Lagoon to Orastie | 5,561.70 mi (8,950.69 km) |
| Upper Grand Lagoon to Oravita | 5,531.43 mi (8,901.98 km) |
| Upper Grand Lagoon to Orsova | 5,572.47 mi (8,968.02 km) |
| Upper Grand Lagoon to Otelu Rosu | 5,540.41 mi (8,916.43 km) |
| Upper Grand Lagoon to Otopeni | 5,727.66 mi (9,217.77 km) |
