| Nafplio to Odessa (Texas) | 6,477.69 mi (10,424.84 km) |
| Nafplio to Ogden (Utah) | 6,289.71 mi (10,122.30 km) |
| Nafplio to Oildale (California) | 6,831.85 mi (10,994.81 km) |
| Nafplio to Ojus (Florida) | 5,793.97 mi (9,324.49 km) |
| Nafplio to Okemos (Michigan) | 5,254.30 mi (8,455.98 km) |
| Nafplio to Oklahoma City (Oklahoma) | 6,107.82 mi (9,829.59 km) |
| Nafplio to Okmulgee (Oklahoma) | 6,042.09 mi (9,723.80 km) |
| Nafplio to Olathe (Kansas) | 5,835.11 mi (9,390.70 km) |
| Nafplio to Old Jamestown (Missouri) | 5,661.22 mi (9,110.85 km) |
| Nafplio to Oldsmar (Florida) | 5,821.39 mi (9,368.62 km) |
| Nafplio to Olean (New York) | 5,037.00 mi (8,106.27 km) |
| Nafplio to Olive Branch (Mississippi) | 5,824.92 mi (9,374.31 km) |
| Nafplio to Olivehurst (California) | 6,677.42 mi (10,746.27 km) |
| Nafplio to Olney (Maryland) | 5,096.95 mi (8,202.74 km) |
| Nafplio to Olympia (Washington) | 6,218.42 mi (10,007.58 km) |
