| Tuusula to Oria | 1,413.26 mi (2,274.42 km) |
| Tuusula to Oristano | 1,584.18 mi (2,549.49 km) |
| Tuusula to Orta Nova | 1,378.03 mi (2,217.72 km) |
| Tuusula to Orte | 1,350.82 mi (2,173.93 km) |
| Tuusula to Ortona | 1,327.21 mi (2,135.95 km) |
| Tuusula to Orvieto | 1,338.58 mi (2,154.24 km) |
| Tuusula to Orzinuovi | 1,208.22 mi (1,944.44 km) |
| Tuusula to Osimo | 1,266.13 mi (2,037.64 km) |
| Tuusula to Ospitaletto | 1,195.62 mi (1,924.16 km) |
| Tuusula to Ostuni | 1,397.90 mi (2,249.70 km) |
| Tuusula to Ottaviano | 1,426.03 mi (2,294.97 km) |
| Tuusula to Ovada | 1,282.82 mi (2,064.50 km) |
| Tuusula to Ozieri | 1,532.58 mi (2,466.46 km) |
| Tuusula to Paceco | 1,644.08 mi (2,645.90 km) |
| Tuusula to Pachino | 1,696.26 mi (2,729.87 km) |
