| Chelmsford to Nasaud | 1,110.92 mi (1,787.85 km) |
| Chelmsford to Navodari | 1,386.43 mi (2,231.24 km) |
| Chelmsford to Negresti-Oas | 1,052.58 mi (1,693.97 km) |
| Chelmsford to Nehoiu | 1,252.78 mi (2,016.15 km) |
| Chelmsford to Ocna Mures | 1,115.19 mi (1,794.73 km) |
| Chelmsford to Odobesti | 1,270.99 mi (2,045.47 km) |
| Chelmsford to Odorheiu Secuiesc | 1,178.51 mi (1,896.63 km) |
| Chelmsford to Oltenita | 1,312.32 mi (2,111.98 km) |
| Chelmsford to Onesti | 1,242.46 mi (1,999.55 km) |
| Chelmsford to Oradea | 1,011.98 mi (1,628.63 km) |
| Chelmsford to Orastie | 1,105.48 mi (1,779.10 km) |
| Chelmsford to Oravita | 1,072.01 mi (1,725.24 km) |
| Chelmsford to Orsova | 1,113.05 mi (1,791.27 km) |
| Chelmsford to Otelu Rosu | 1,081.88 mi (1,741.11 km) |
| Chelmsford to Otopeni | 1,271.49 mi (2,046.27 km) |
