| Nafplio to Orangevale (California) | 6,692.90 mi (10,771.18 km) |
| Nafplio to Orchards (Washington) | 6,294.12 mi (10,129.41 km) |
| Nafplio to Orcutt (California) | 6,904.05 mi (11,110.99 km) |
| Nafplio to Oregon (Ohio) | 5,260.36 mi (8,465.73 km) |
| Nafplio to Oregon (Wisconsin) | 5,437.34 mi (8,750.55 km) |
| Nafplio to Oregon City (Oregon) | 6,316.89 mi (10,166.05 km) |
| Nafplio to Orem (Utah) | 6,334.81 mi (10,194.89 km) |
| Nafplio to Orinda (California) | 6,766.42 mi (10,889.51 km) |
| Nafplio to Orland Park (Illinois) | 5,438.55 mi (8,752.51 km) |
| Nafplio to Orlando (Florida) | 5,740.08 mi (9,237.76 km) |
| Nafplio to Ormond Beach (Florida) | 5,693.19 mi (9,162.30 km) |
| Nafplio to Oro Valley (Arizona) | 6,758.63 mi (10,876.97 km) |
| Nafplio to Oroville (California) | 6,651.87 mi (10,705.15 km) |
| Nafplio to Oshkosh (Wisconsin) | 5,356.18 mi (8,619.93 km) |
| Nafplio to Oskaloosa (Iowa) | 5,636.36 mi (9,070.85 km) |
