| Lake Morton-Berrydale to Orbetello | 5,610.07 mi (9,028.53 km) |
| Lake Morton-Berrydale to Oria | 5,884.37 mi (9,469.97 km) |
| Lake Morton-Berrydale to Oristano | 5,691.41 mi (9,159.44 km) |
| Lake Morton-Berrydale to Orta Nova | 5,788.04 mi (9,314.95 km) |
| Lake Morton-Berrydale to Orte | 5,638.36 mi (9,074.07 km) |
| Lake Morton-Berrydale to Ortona | 5,694.34 mi (9,164.15 km) |
| Lake Morton-Berrydale to Orvieto | 5,615.95 mi (9,037.99 km) |
| Lake Morton-Berrydale to Orzinuovi | 5,401.46 mi (8,692.80 km) |
| Lake Morton-Berrydale to Osimo | 5,603.40 mi (9,017.80 km) |
| Lake Morton-Berrydale to Ospitaletto | 5,395.74 mi (8,683.60 km) |
| Lake Morton-Berrydale to Ostuni | 5,868.74 mi (9,444.82 km) |
| Lake Morton-Berrydale to Ottaviano | 5,787.72 mi (9,314.43 km) |
| Lake Morton-Berrydale to Ovada | 5,413.74 mi (8,712.57 km) |
| Lake Morton-Berrydale to Ozieri | 5,662.48 mi (9,112.88 km) |
| Lake Morton-Berrydale to Paceco | 5,912.91 mi (9,515.91 km) |
