| Duluth to Nasaud | 4,896.53 mi (7,880.21 km) |
| Duluth to Navodari | 5,183.01 mi (8,341.24 km) |
| Duluth to Negresti-Oas | 4,835.96 mi (7,782.73 km) |
| Duluth to Nehoiu | 5,056.99 mi (8,138.45 km) |
| Duluth to Ocna Mures | 4,926.71 mi (7,928.77 km) |
| Duluth to Odobesti | 5,057.82 mi (8,139.78 km) |
| Duluth to Odorheiu Secuiesc | 4,975.04 mi (8,006.55 km) |
| Duluth to Oltenita | 5,135.41 mi (8,264.64 km) |
| Duluth to Onesti | 5,022.38 mi (8,082.75 km) |
| Duluth to Oradea | 4,830.80 mi (7,774.43 km) |
| Duluth to Orastie | 4,934.42 mi (7,941.19 km) |
| Duluth to Oravita | 4,928.34 mi (7,931.39 km) |
| Duluth to Orsova | 4,967.63 mi (7,994.62 km) |
| Duluth to Otelu Rosu | 4,924.91 mi (7,925.87 km) |
| Duluth to Otopeni | 5,092.91 mi (8,196.25 km) |
