| Spring Valley to Orbetello | 6,047.95 mi (9,733.24 km) |
| Spring Valley to Oria | 6,359.47 mi (10,234.58 km) |
| Spring Valley to Oristano | 6,089.21 mi (9,799.63 km) |
| Spring Valley to Orta Nova | 6,253.27 mi (10,063.67 km) |
| Spring Valley to Orte | 6,085.46 mi (9,793.60 km) |
| Spring Valley to Ortona | 6,156.22 mi (9,907.48 km) |
| Spring Valley to Orvieto | 6,062.78 mi (9,757.11 km) |
| Spring Valley to Orzinuovi | 5,851.88 mi (9,417.69 km) |
| Spring Valley to Osimo | 6,066.13 mi (9,762.49 km) |
| Spring Valley to Ospitaletto | 5,848.34 mi (9,411.99 km) |
| Spring Valley to Ostuni | 6,344.93 mi (10,211.18 km) |
| Spring Valley to Ottaviano | 6,239.88 mi (10,042.12 km) |
| Spring Valley to Ovada | 5,848.97 mi (9,413.01 km) |
| Spring Valley to Ozieri | 6,068.91 mi (9,766.97 km) |
| Spring Valley to Paceco | 6,328.88 mi (10,185.35 km) |
