| Gulbene to Orbetello | 1,224.74 mi (1,971.03 km) |
| Gulbene to Oria | 1,221.39 mi (1,965.64 km) |
| Gulbene to Oristano | 1,443.54 mi (2,323.16 km) |
| Gulbene to Orta Nova | 1,198.59 mi (1,928.94 km) |
| Gulbene to Orte | 1,195.66 mi (1,924.22 km) |
| Gulbene to Ortona | 1,158.62 mi (1,864.62 km) |
| Gulbene to Orvieto | 1,186.24 mi (1,909.07 km) |
| Gulbene to Orzinuovi | 1,084.57 mi (1,745.44 km) |
| Gulbene to Osimo | 1,107.54 mi (1,782.42 km) |
| Gulbene to Ospitaletto | 1,071.89 mi (1,725.04 km) |
| Gulbene to Ostuni | 1,206.69 mi (1,941.98 km) |
| Gulbene to Ottaviano | 1,252.69 mi (2,016.00 km) |
| Gulbene to Ovada | 1,163.86 mi (1,873.05 km) |
| Gulbene to Ozieri | 1,391.95 mi (2,240.12 km) |
| Gulbene to Paceco | 1,474.71 mi (2,373.31 km) |
