| Byram to Orbetello | 5,279.39 mi (8,496.36 km) |
| Byram to Oria | 5,630.46 mi (9,061.35 km) |
| Byram to Oristano | 5,252.55 mi (8,453.17 km) |
| Byram to Orta Nova | 5,515.32 mi (8,876.05 km) |
| Byram to Orte | 5,329.50 mi (8,577.00 km) |
| Byram to Ortona | 5,420.06 mi (8,722.74 km) |
| Byram to Orvieto | 5,308.15 mi (8,542.64 km) |
| Byram to Orzinuovi | 5,120.14 mi (8,240.07 km) |
| Byram to Osimo | 5,338.54 mi (8,591.55 km) |
| Byram to Ospitaletto | 5,120.65 mi (8,240.88 km) |
| Byram to Ostuni | 5,618.97 mi (9,042.86 km) |
| Byram to Ottaviano | 5,480.55 mi (8,820.10 km) |
| Byram to Ovada | 5,091.60 mi (8,194.15 km) |
| Byram to Ozieri | 5,247.42 mi (8,444.90 km) |
| Byram to Paceco | 5,503.30 mi (8,856.70 km) |
