| Portogruaro to Oak Harbor (Washington) | 5,403.60 mi (8,696.26 km) |
| Portogruaro to Oak Hills (Oregon) | 5,573.75 mi (8,970.08 km) |
| Portogruaro to Oak Lawn (Illinois) | 4,669.86 mi (7,515.41 km) |
| Portogruaro to Oak Park (California) | 6,140.48 mi (9,882.14 km) |
| Portogruaro to Oak Park (Illinois) | 4,663.24 mi (7,504.76 km) |
| Portogruaro to Oak Park (Michigan) | 4,458.93 mi (7,175.95 km) |
| Portogruaro to Oak Ridge (Florida) | 5,027.74 mi (8,091.37 km) |
| Portogruaro to Oak Ridge (New Jersey) | 4,168.37 mi (6,708.35 km) |
| Portogruaro to Oak Ridge (Tennessee) | 4,799.17 mi (7,723.52 km) |
| Portogruaro to Oakdale (California) | 5,988.11 mi (9,636.93 km) |
| Portogruaro to Oakdale (Minnesota) | 4,707.74 mi (7,576.37 km) |
| Portogruaro to Oakland (California) | 6,023.74 mi (9,694.28 km) |
| Portogruaro to Oakland (New Jersey) | 4,157.70 mi (6,691.17 km) |
| Portogruaro to Oakland Park (Florida) | 5,080.15 mi (8,175.71 km) |
| Portogruaro to Oakleaf Plantation (Florida) | 4,965.94 mi (7,991.90 km) |
