| Caldwell to Nasaud | 5,721.27 mi (9,207.49 km) |
| Caldwell to Navodari | 5,993.69 mi (9,645.91 km) |
| Caldwell to Negresti-Oas | 5,664.16 mi (9,115.58 km) |
| Caldwell to Nehoiu | 5,881.07 mi (9,464.67 km) |
| Caldwell to Ocna Mures | 5,764.14 mi (9,276.49 km) |
| Caldwell to Odobesti | 5,871.30 mi (9,448.94 km) |
| Caldwell to Odorheiu Secuiesc | 5,800.16 mi (9,334.46 km) |
| Caldwell to Oltenita | 5,966.93 mi (9,602.85 km) |
| Caldwell to Onesti | 5,834.48 mi (9,389.68 km) |
| Caldwell to Oradea | 5,679.17 mi (9,139.75 km) |
| Caldwell to Orastie | 5,782.41 mi (9,305.89 km) |
| Caldwell to Oravita | 5,796.60 mi (9,328.73 km) |
| Caldwell to Orsova | 5,832.40 mi (9,386.34 km) |
| Caldwell to Otelu Rosu | 5,783.22 mi (9,307.19 km) |
| Caldwell to Otopeni | 5,925.90 mi (9,536.82 km) |
