| Pico Rivera to Orbetello | 6,259.25 mi (10,073.30 km) |
| Pico Rivera to Oria | 6,568.51 mi (10,571.00 km) |
| Pico Rivera to Oristano | 6,302.67 mi (10,143.17 km) |
| Pico Rivera to Orta Nova | 6,462.94 mi (10,401.10 km) |
| Pico Rivera to Orte | 6,296.21 mi (10,132.77 km) |
| Pico Rivera to Ortona | 6,366.02 mi (10,245.12 km) |
| Pico Rivera to Orvieto | 6,273.53 mi (10,096.27 km) |
| Pico Rivera to Orzinuovi | 6,062.16 mi (9,756.11 km) |
| Pico Rivera to Osimo | 6,275.77 mi (10,099.88 km) |
| Pico Rivera to Ospitaletto | 6,058.46 mi (9,750.16 km) |
| Pico Rivera to Ostuni | 6,553.87 mi (10,547.43 km) |
| Pico Rivera to Ottaviano | 6,450.46 mi (10,381.01 km) |
| Pico Rivera to Ovada | 6,060.24 mi (9,753.01 km) |
| Pico Rivera to Ozieri | 6,281.96 mi (10,109.84 km) |
| Pico Rivera to Paceco | 6,541.67 mi (10,527.80 km) |
