| Grantham to Nasaud | 1,169.08 mi (1,881.46 km) |
| Grantham to Navodari | 1,449.00 mi (2,331.95 km) |
| Grantham to Negresti-Oas | 1,109.64 mi (1,785.79 km) |
| Grantham to Nehoiu | 1,315.37 mi (2,116.88 km) |
| Grantham to Ocna Mures | 1,177.67 mi (1,895.28 km) |
| Grantham to Odobesti | 1,331.11 mi (2,142.22 km) |
| Grantham to Odorheiu Secuiesc | 1,239.17 mi (1,994.26 km) |
| Grantham to Oltenita | 1,378.39 mi (2,218.30 km) |
| Grantham to Onesti | 1,301.27 mi (2,094.19 km) |
| Grantham to Oradea | 1,074.68 mi (1,729.54 km) |
| Grantham to Orastie | 1,170.95 mi (1,884.46 km) |
| Grantham to Oravita | 1,142.65 mi (1,838.92 km) |
| Grantham to Orsova | 1,183.56 mi (1,904.76 km) |
| Grantham to Otelu Rosu | 1,149.84 mi (1,850.48 km) |
| Grantham to Otopeni | 1,336.99 mi (2,151.67 km) |
