| Tallaght to Orangevale (California) | 4,991.80 mi (8,033.53 km) |
| Tallaght to Orchards (Washington) | 4,634.80 mi (7,458.99 km) |
| Tallaght to Orcutt (California) | 5,184.07 mi (8,342.95 km) |
| Tallaght to Oregon (Ohio) | 3,506.53 mi (5,643.22 km) |
| Tallaght to Oregon (Wisconsin) | 3,675.55 mi (5,915.23 km) |
| Tallaght to Oregon City (Oregon) | 4,656.05 mi (7,493.19 km) |
| Tallaght to Orem (Utah) | 4,598.57 mi (7,400.69 km) |
| Tallaght to Orinda (California) | 5,067.19 mi (8,154.85 km) |
| Tallaght to Orland Park (Illinois) | 3,679.10 mi (5,920.93 km) |
| Tallaght to Orlando (Florida) | 4,060.89 mi (6,535.37 km) |
| Tallaght to Ormond Beach (Florida) | 4,009.50 mi (6,452.66 km) |
| Tallaght to Oro Valley (Arizona) | 5,002.10 mi (8,050.10 km) |
| Tallaght to Oroville (California) | 4,956.16 mi (7,976.16 km) |
| Tallaght to Oshkosh (Wisconsin) | 3,594.13 mi (5,784.19 km) |
| Tallaght to Oskaloosa (Iowa) | 3,874.30 mi (6,235.09 km) |
