| Great Falls to Nasaud | 5,365.90 mi (8,635.58 km) |
| Great Falls to Navodari | 5,640.88 mi (9,078.13 km) |
| Great Falls to Negresti-Oas | 5,308.21 mi (8,542.74 km) |
| Great Falls to Nehoiu | 5,526.23 mi (8,893.61 km) |
| Great Falls to Ocna Mures | 5,407.36 mi (8,702.31 km) |
| Great Falls to Odobesti | 5,517.77 mi (8,880.00 km) |
| Great Falls to Odorheiu Secuiesc | 5,444.97 mi (8,762.83 km) |
| Great Falls to Oltenita | 5,611.41 mi (9,030.69 km) |
| Great Falls to Onesti | 5,481.02 mi (8,820.85 km) |
| Great Falls to Oradea | 5,320.90 mi (8,563.16 km) |
| Great Falls to Orastie | 5,424.44 mi (8,729.80 km) |
| Great Falls to Oravita | 5,436.40 mi (8,749.05 km) |
| Great Falls to Orsova | 5,472.66 mi (8,807.40 km) |
| Great Falls to Otelu Rosu | 5,424.08 mi (8,729.22 km) |
| Great Falls to Otopeni | 5,570.09 mi (8,964.20 km) |
