| North Branch to Orbetello | 4,782.54 mi (7,696.76 km) |
| North Branch to Oria | 5,111.79 mi (8,226.63 km) |
| North Branch to Oristano | 4,802.72 mi (7,729.22 km) |
| North Branch to Orta Nova | 5,001.03 mi (8,048.38 km) |
| North Branch to Orte | 4,824.82 mi (7,764.80 km) |
| North Branch to Ortona | 4,903.49 mi (7,891.41 km) |
| North Branch to Orvieto | 4,802.36 mi (7,728.64 km) |
| North Branch to Orzinuovi | 4,597.15 mi (7,398.40 km) |
| North Branch to Osimo | 4,815.49 mi (7,749.77 km) |
| North Branch to Ospitaletto | 4,595.04 mi (7,395.00 km) |
| North Branch to Ostuni | 5,098.22 mi (8,204.80 km) |
| North Branch to Ottaviano | 4,979.81 mi (8,014.23 km) |
| North Branch to Ovada | 4,585.15 mi (7,379.08 km) |
| North Branch to Ozieri | 4,786.71 mi (7,703.46 km) |
| North Branch to Paceco | 5,047.97 mi (8,123.93 km) |
