| Darien to Odessa (Texas) | 1,044.21 mi (1,680.50 km) |
| Darien to Ogden (Utah) | 1,237.97 mi (1,992.32 km) |
| Darien to Oildale (California) | 1,722.43 mi (2,771.99 km) |
| Darien to Ojus (Florida) | 1,178.28 mi (1,896.26 km) |
| Darien to Okemos (Michigan) | 194.27 mi (312.64 km) |
| Darien to Oklahoma City (Oklahoma) | 672.27 mi (1,081.91 km) |
| Darien to Okmulgee (Oklahoma) | 605.12 mi (973.85 km) |
| Darien to Olathe (Kansas) | 410.75 mi (661.04 km) |
| Darien to Old Jamestown (Missouri) | 234.55 mi (377.47 km) |
| Darien to Oldsmar (Florida) | 992.37 mi (1,597.06 km) |
| Darien to Olean (New York) | 491.33 mi (790.71 km) |
| Darien to Olive Branch (Mississippi) | 479.44 mi (771.59 km) |
| Darien to Olivehurst (California) | 1,764.58 mi (2,839.82 km) |
| Darien to Olney (Maryland) | 600.64 mi (966.63 km) |
| Darien to Olympia (Washington) | 1,746.83 mi (2,811.25 km) |
