| Heide to Navodari | 1,107.40 mi (1,782.19 km) |
| Heide to Negresti-Oas | 758.56 mi (1,220.78 km) |
| Heide to Nehoiu | 976.96 mi (1,572.26 km) |
| Heide to Ocna Mures | 843.12 mi (1,356.87 km) |
| Heide to Odobesti | 983.75 mi (1,583.20 km) |
| Heide to Odorheiu Secuiesc | 896.08 mi (1,442.09 km) |
| Heide to Oltenita | 1,051.52 mi (1,692.26 km) |
| Heide to Onesti | 950.34 mi (1,529.43 km) |
| Heide to Oradea | 745.18 mi (1,199.25 km) |
| Heide to Orastie | 848.44 mi (1,365.44 km) |
| Heide to Oravita | 844.80 mi (1,359.57 km) |
| Heide to Orsova | 883.19 mi (1,421.35 km) |
| Heide to Otelu Rosu | 839.00 mi (1,350.24 km) |
| Heide to Otopeni | 1,008.99 mi (1,623.82 km) |
| Heide to Ovidiu | 1,108.04 mi (1,783.21 km) |
