| Happy Valley to Orbetello | 5,730.76 mi (9,222.77 km) |
| Happy Valley to Oria | 6,008.03 mi (9,668.99 km) |
| Happy Valley to Oristano | 5,809.06 mi (9,348.78 km) |
| Happy Valley to Orta Nova | 5,910.93 mi (9,512.72 km) |
| Happy Valley to Orte | 5,759.78 mi (9,269.47 km) |
| Happy Valley to Ortona | 5,816.88 mi (9,361.37 km) |
| Happy Valley to Orvieto | 5,737.32 mi (9,233.32 km) |
| Happy Valley to Orzinuovi | 5,522.84 mi (8,888.16 km) |
| Happy Valley to Osimo | 5,725.91 mi (9,214.96 km) |
| Happy Valley to Ospitaletto | 5,517.28 mi (8,879.20 km) |
| Happy Valley to Ostuni | 5,992.46 mi (9,643.93 km) |
| Happy Valley to Ottaviano | 5,909.67 mi (9,510.70 km) |
| Happy Valley to Ovada | 5,534.00 mi (8,906.11 km) |
| Happy Valley to Ozieri | 5,780.79 mi (9,303.28 km) |
| Happy Valley to Paceco | 6,032.30 mi (9,708.05 km) |
