| Callaway to Nasaud | 5,547.96 mi (8,928.58 km) |
| Callaway to Navodari | 5,832.12 mi (9,385.89 km) |
| Callaway to Negresti-Oas | 5,487.34 mi (8,831.02 km) |
| Callaway to Nehoiu | 5,698.84 mi (9,171.40 km) |
| Callaway to Ocna Mures | 5,561.42 mi (8,950.25 km) |
| Callaway to Odobesti | 5,711.73 mi (9,192.13 km) |
| Callaway to Odorheiu Secuiesc | 5,620.95 mi (9,046.04 km) |
| Callaway to Oltenita | 5,763.57 mi (9,275.57 km) |
| Callaway to Onesti | 5,680.11 mi (9,141.25 km) |
| Callaway to Oradea | 5,458.85 mi (8,785.16 km) |
| Callaway to Orastie | 5,556.10 mi (8,941.69 km) |
| Callaway to Oravita | 5,525.63 mi (8,892.64 km) |
| Callaway to Orsova | 5,566.66 mi (8,958.67 km) |
| Callaway to Otelu Rosu | 5,534.71 mi (8,907.26 km) |
| Callaway to Otopeni | 5,722.08 mi (9,208.80 km) |
