| Bolton to Nasaud | 1,249.58 mi (2,011.01 km) |
| Bolton to Navodari | 1,531.01 mi (2,463.92 km) |
| Bolton to Negresti-Oas | 1,189.75 mi (1,914.72 km) |
| Bolton to Nehoiu | 1,397.48 mi (2,249.03 km) |
| Bolton to Ocna Mures | 1,259.87 mi (2,027.57 km) |
| Bolton to Odobesti | 1,412.24 mi (2,272.78 km) |
| Bolton to Odorheiu Secuiesc | 1,320.61 mi (2,125.31 km) |
| Bolton to Oltenita | 1,461.72 mi (2,352.41 km) |
| Bolton to Onesti | 1,381.88 mi (2,223.92 km) |
| Bolton to Oradea | 1,157.08 mi (1,862.14 km) |
| Bolton to Orastie | 1,254.23 mi (2,018.49 km) |
| Bolton to Oravita | 1,227.56 mi (1,975.57 km) |
| Bolton to Orsova | 1,268.42 mi (2,041.32 km) |
| Bolton to Otelu Rosu | 1,233.95 mi (1,985.85 km) |
| Bolton to Otopeni | 1,420.15 mi (2,285.51 km) |
