| Sidcup to Nasaud | 1,124.90 mi (1,810.35 km) |
| Sidcup to Navodari | 1,398.79 mi (2,251.14 km) |
| Sidcup to Negresti-Oas | 1,066.96 mi (1,717.10 km) |
| Sidcup to Nehoiu | 1,265.23 mi (2,036.19 km) |
| Sidcup to Ocna Mures | 1,127.79 mi (1,815.00 km) |
| Sidcup to Odobesti | 1,284.24 mi (2,066.78 km) |
| Sidcup to Odorheiu Secuiesc | 1,191.65 mi (1,917.77 km) |
| Sidcup to Oltenita | 1,323.52 mi (2,130.00 km) |
| Sidcup to Onesti | 1,256.14 mi (2,021.56 km) |
| Sidcup to Oradea | 1,024.60 mi (1,648.94 km) |
| Sidcup to Orastie | 1,117.05 mi (1,797.72 km) |
| Sidcup to Oravita | 1,081.65 mi (1,740.75 km) |
| Sidcup to Orsova | 1,122.70 mi (1,806.81 km) |
| Sidcup to Otelu Rosu | 1,092.55 mi (1,758.30 km) |
| Sidcup to Otopeni | 1,282.92 mi (2,064.66 km) |
