| Hayden to Orbetello | 5,444.89 mi (8,762.71 km) |
| Hayden to Oria | 5,730.08 mi (9,221.67 km) |
| Hayden to Oristano | 5,516.55 mi (8,878.02 km) |
| Hayden to Orta Nova | 5,630.72 mi (9,061.77 km) |
| Hayden to Orte | 5,475.68 mi (8,812.26 km) |
| Hayden to Ortona | 5,535.80 mi (8,909.01 km) |
| Hayden to Orvieto | 5,453.13 mi (8,775.96 km) |
| Hayden to Orzinuovi | 5,238.88 mi (8,431.16 km) |
| Hayden to Osimo | 5,444.79 mi (8,762.55 km) |
| Hayden to Ospitaletto | 5,233.72 mi (8,422.85 km) |
| Hayden to Ostuni | 5,714.71 mi (9,196.93 km) |
| Hayden to Ottaviano | 5,626.87 mi (9,055.57 km) |
| Hayden to Ovada | 5,247.23 mi (8,444.60 km) |
| Hayden to Ozieri | 5,489.59 mi (8,834.65 km) |
| Hayden to Paceco | 5,743.19 mi (9,242.77 km) |
