| Donostia to Odessa (Texas) | 5,213.21 mi (8,389.85 km) |
| Donostia to Ogden (Utah) | 5,156.14 mi (8,298.01 km) |
| Donostia to Oildale (California) | 5,709.82 mi (9,189.07 km) |
| Donostia to Ojus (Florida) | 4,440.01 mi (7,145.51 km) |
| Donostia to Okemos (Michigan) | 3,980.30 mi (6,405.67 km) |
| Donostia to Oklahoma City (Oklahoma) | 4,841.04 mi (7,790.90 km) |
| Donostia to Okmulgee (Oklahoma) | 4,769.10 mi (7,675.13 km) |
| Donostia to Olathe (Kansas) | 4,578.01 mi (7,367.60 km) |
| Donostia to Old Jamestown (Missouri) | 4,383.75 mi (7,054.97 km) |
| Donostia to Oldsmar (Florida) | 4,474.09 mi (7,200.35 km) |
| Donostia to Olean (New York) | 3,738.34 mi (6,016.28 km) |
| Donostia to Olive Branch (Mississippi) | 4,522.86 mi (7,278.84 km) |
| Donostia to Olivehurst (California) | 5,607.36 mi (9,024.17 km) |
| Donostia to Olney (Maryland) | 3,777.34 mi (6,079.04 km) |
| Donostia to Olympia (Washington) | 5,228.82 mi (8,414.98 km) |
