| Carnoustie to Orbetello | 1,150.46 mi (1,851.48 km) |
| Carnoustie to Oria | 1,434.31 mi (2,308.29 km) |
| Carnoustie to Oristano | 1,255.41 mi (2,020.38 km) |
| Carnoustie to Orta Nova | 1,332.12 mi (2,143.85 km) |
| Carnoustie to Orte | 1,177.73 mi (1,895.38 km) |
| Carnoustie to Ortona | 1,236.67 mi (1,990.23 km) |
| Carnoustie to Orvieto | 1,155.32 mi (1,859.30 km) |
| Carnoustie to Orzinuovi | 940.83 mi (1,514.11 km) |
| Carnoustie to Osimo | 1,145.70 mi (1,843.82 km) |
| Carnoustie to Ospitaletto | 935.15 mi (1,504.98 km) |
| Carnoustie to Ostuni | 1,419.35 mi (2,284.22 km) |
| Carnoustie to Ottaviano | 1,327.76 mi (2,136.83 km) |
| Carnoustie to Ovada | 956.42 mi (1,539.21 km) |
| Carnoustie to Ozieri | 1,219.38 mi (1,962.40 km) |
| Carnoustie to Paceco | 1,458.60 mi (2,347.38 km) |
