| Front Royal to Orbetello | 4,458.57 mi (7,175.37 km) |
| Front Royal to Oria | 4,810.88 mi (7,742.36 km) |
| Front Royal to Oristano | 4,429.55 mi (7,128.67 km) |
| Front Royal to Orta Nova | 4,695.56 mi (7,556.77 km) |
| Front Royal to Orte | 4,509.23 mi (7,256.91 km) |
| Front Royal to Ortona | 4,600.74 mi (7,404.17 km) |
| Front Royal to Orvieto | 4,488.03 mi (7,222.79 km) |
| Front Royal to Orzinuovi | 4,302.35 mi (6,923.97 km) |
| Front Royal to Osimo | 4,520.14 mi (7,274.47 km) |
| Front Royal to Ospitaletto | 4,303.18 mi (6,925.30 km) |
| Front Royal to Ostuni | 4,799.63 mi (7,724.26 km) |
| Front Royal to Ottaviano | 4,659.67 mi (7,499.02 km) |
| Front Royal to Ovada | 4,272.04 mi (6,875.18 km) |
| Front Royal to Ozieri | 4,424.66 mi (7,120.81 km) |
| Front Royal to Paceco | 4,680.28 mi (7,532.19 km) |
