| Chalons-en-Champagne to Navodari | 1,188.36 mi (1,912.47 km) |
| Chalons-en-Champagne to Negresti-Oas | 874.98 mi (1,408.14 km) |
| Chalons-en-Champagne to Nehoiu | 1,056.44 mi (1,700.18 km) |
| Chalons-en-Champagne to Ocna Mures | 921.47 mi (1,482.96 km) |
| Chalons-en-Champagne to Odobesti | 1,080.78 mi (1,739.35 km) |
| Chalons-en-Champagne to Odorheiu Secuiesc | 988.42 mi (1,590.71 km) |
| Chalons-en-Champagne to Oltenita | 1,106.34 mi (1,780.48 km) |
| Chalons-en-Champagne to Onesti | 1,056.15 mi (1,699.70 km) |
| Chalons-en-Champagne to Oradea | 819.91 mi (1,319.52 km) |
| Chalons-en-Champagne to Orastie | 904.02 mi (1,454.88 km) |
| Chalons-en-Champagne to Oravita | 857.63 mi (1,380.21 km) |
| Chalons-en-Champagne to Orsova | 898.36 mi (1,445.77 km) |
| Chalons-en-Champagne to Otelu Rosu | 874.29 mi (1,407.03 km) |
| Chalons-en-Champagne to Otopeni | 1,067.44 mi (1,717.89 km) |
| Chalons-en-Champagne to Ovidiu | 1,187.41 mi (1,910.95 km) |
