| Rapid City to Nasaud | 5,366.75 mi (8,636.95 km) |
| Rapid City to Navodari | 5,649.81 mi (9,092.49 km) |
| Rapid City to Negresti-Oas | 5,307.08 mi (8,540.92 km) |
| Rapid City to Nehoiu | 5,527.94 mi (8,896.37 km) |
| Rapid City to Ocna Mures | 5,401.76 mi (8,693.29 km) |
| Rapid City to Odobesti | 5,524.88 mi (8,891.44 km) |
| Rapid City to Odorheiu Secuiesc | 5,445.87 mi (8,764.29 km) |
| Rapid City to Oltenita | 5,609.54 mi (9,027.68 km) |
| Rapid City to Onesti | 5,488.72 mi (8,833.24 km) |
| Rapid City to Oradea | 5,309.27 mi (8,544.45 km) |
| Rapid City to Orastie | 5,413.35 mi (8,711.95 km) |
| Rapid City to Oravita | 5,414.52 mi (8,713.82 km) |
| Rapid City to Orsova | 5,452.78 mi (8,775.40 km) |
| Rapid City to Otelu Rosu | 5,407.51 mi (8,702.54 km) |
| Rapid City to Otopeni | 5,567.32 mi (8,959.74 km) |
