| Lake Stickney to Orbetello | 5,582.61 mi (8,984.34 km) |
| Lake Stickney to Oria | 5,855.40 mi (9,423.36 km) |
| Lake Stickney to Oristano | 5,665.38 mi (9,117.54 km) |
| Lake Stickney to Orta Nova | 5,759.49 mi (9,269.00 km) |
| Lake Stickney to Orte | 5,610.55 mi (9,029.31 km) |
| Lake Stickney to Ortona | 5,665.96 mi (9,118.48 km) |
| Lake Stickney to Orvieto | 5,588.16 mi (8,993.27 km) |
| Lake Stickney to Orzinuovi | 5,373.68 mi (8,648.09 km) |
| Lake Stickney to Osimo | 5,575.04 mi (8,972.16 km) |
| Lake Stickney to Ospitaletto | 5,367.88 mi (8,638.77 km) |
| Lake Stickney to Ostuni | 5,839.75 mi (9,398.16 km) |
| Lake Stickney to Ottaviano | 5,759.63 mi (9,269.23 km) |
| Lake Stickney to Ovada | 5,386.51 mi (8,668.75 km) |
| Lake Stickney to Ozieri | 5,636.14 mi (9,070.49 km) |
| Lake Stickney to Paceco | 5,886.06 mi (9,472.69 km) |
