| Rancho Palos Verdes to Orbetello | 6,281.56 mi (10,109.19 km) |
| Rancho Palos Verdes to Oria | 6,590.62 mi (10,606.58 km) |
| Rancho Palos Verdes to Oristano | 6,325.15 mi (10,179.34 km) |
| Rancho Palos Verdes to Orta Nova | 6,485.11 mi (10,436.77 km) |
| Rancho Palos Verdes to Orte | 6,318.47 mi (10,168.59 km) |
| Rancho Palos Verdes to Ortona | 6,388.20 mi (10,280.82 km) |
| Rancho Palos Verdes to Orvieto | 6,295.78 mi (10,132.09 km) |
| Rancho Palos Verdes to Orzinuovi | 6,084.38 mi (9,791.86 km) |
| Rancho Palos Verdes to Osimo | 6,297.93 mi (10,135.55 km) |
| Rancho Palos Verdes to Ospitaletto | 6,080.67 mi (9,785.90 km) |
| Rancho Palos Verdes to Ostuni | 6,575.97 mi (10,583.00 km) |
| Rancho Palos Verdes to Ottaviano | 6,472.70 mi (10,416.80 km) |
| Rancho Palos Verdes to Ovada | 6,082.54 mi (9,788.90 km) |
| Rancho Palos Verdes to Ozieri | 6,304.40 mi (10,145.95 km) |
| Rancho Palos Verdes to Paceco | 6,564.09 mi (10,563.89 km) |
