| Nafplio to Oakley (California) | 6,747.38 mi (10,858.85 km) |
| Nafplio to Oakton (Virginia) | 5,117.37 mi (8,235.61 km) |
| Nafplio to Oakville (Missouri) | 5,680.93 mi (9,142.57 km) |
| Nafplio to Oatfield (Oregon) | 6,312.56 mi (10,159.08 km) |
| Nafplio to Ocala (Florida) | 5,747.43 mi (9,249.60 km) |
| Nafplio to Ocean Acres (New Jersey) | 4,951.16 mi (7,968.12 km) |
| Nafplio to Ocean City (New Jersey) | 4,983.77 mi (8,020.60 km) |
| Nafplio to Ocean Pines (Maryland) | 5,042.62 mi (8,115.31 km) |
| Nafplio to Ocean Pointe (Hawaii) | 8,368.14 mi (13,467.22 km) |
| Nafplio to Ocean Springs (Mississippi) | 5,992.24 mi (9,643.58 km) |
| Nafplio to Oceanside (California) | 6,913.50 mi (11,126.20 km) |
| Nafplio to Oceanside (New York) | 4,888.73 mi (7,867.66 km) |
| Nafplio to Ocoee (Florida) | 5,744.82 mi (9,245.39 km) |
| Nafplio to Oconomowoc (Wisconsin) | 5,395.43 mi (8,683.11 km) |
| Nafplio to Odenton (Maryland) | 5,083.69 mi (8,181.40 km) |
