| Silves to Navodari | 1,982.74 mi (3,190.92 km) |
| Silves to Negresti-Oas | 1,765.99 mi (2,842.08 km) |
| Silves to Nehoiu | 1,873.90 mi (3,015.75 km) |
| Silves to Ocna Mures | 1,766.29 mi (2,842.57 km) |
| Silves to Odobesti | 1,913.20 mi (3,079.00 km) |
| Silves to Odorheiu Secuiesc | 1,833.47 mi (2,950.68 km) |
| Silves to Oltenita | 1,884.35 mi (3,032.58 km) |
| Silves to Onesti | 1,902.50 mi (3,061.78 km) |
| Silves to Oradea | 1,685.28 mi (2,712.19 km) |
| Silves to Orastie | 1,729.13 mi (2,782.77 km) |
| Silves to Oravita | 1,648.03 mi (2,652.25 km) |
| Silves to Orsova | 1,679.50 mi (2,702.89 km) |
| Silves to Otelu Rosu | 1,685.17 mi (2,712.02 km) |
| Silves to Otopeni | 1,858.12 mi (2,990.35 km) |
| Silves to Ovidiu | 1,980.02 mi (3,186.54 km) |
