| Waltham to Nasaud | 4,388.31 mi (7,062.31 km) |
| Waltham to Navodari | 4,672.83 mi (7,520.19 km) |
| Waltham to Negresti-Oas | 4,327.65 mi (6,964.68 km) |
| Waltham to Nehoiu | 4,539.67 mi (7,305.89 km) |
| Waltham to Ocna Mures | 4,402.35 mi (7,084.90 km) |
| Waltham to Odobesti | 4,552.15 mi (7,325.98 km) |
| Waltham to Odorheiu Secuiesc | 4,461.53 mi (7,180.14 km) |
| Waltham to Oltenita | 4,605.19 mi (7,411.33 km) |
| Waltham to Onesti | 4,520.42 mi (7,274.91 km) |
| Waltham to Oradea | 4,299.92 mi (6,920.05 km) |
| Waltham to Orastie | 4,397.69 mi (7,077.40 km) |
| Waltham to Oravita | 4,368.89 mi (7,031.05 km) |
| Waltham to Orsova | 4,409.90 mi (7,097.04 km) |
| Waltham to Otelu Rosu | 4,377.03 mi (7,044.14 km) |
| Waltham to Otopeni | 4,563.56 mi (7,344.34 km) |
