| Abertawe to Odessa (Texas) | 4,857.57 mi (7,817.50 km) |
| Abertawe to Ogden (Utah) | 4,708.75 mi (7,578.00 km) |
| Abertawe to Oildale (California) | 5,259.16 mi (8,463.80 km) |
| Abertawe to Ojus (Florida) | 4,253.74 mi (6,845.73 km) |
| Abertawe to Okemos (Michigan) | 3,634.96 mi (5,849.91 km) |
| Abertawe to Oklahoma City (Oklahoma) | 4,487.63 mi (7,222.14 km) |
| Abertawe to Okmulgee (Oklahoma) | 4,422.09 mi (7,116.67 km) |
| Abertawe to Olathe (Kansas) | 4,215.06 mi (6,783.49 km) |
| Abertawe to Old Jamestown (Missouri) | 4,041.87 mi (6,504.77 km) |
| Abertawe to Oldsmar (Florida) | 4,255.32 mi (6,848.28 km) |
| Abertawe to Olean (New York) | 3,424.33 mi (5,510.92 km) |
| Abertawe to Olive Branch (Mississippi) | 4,211.18 mi (6,777.24 km) |
| Abertawe to Olivehurst (California) | 5,132.84 mi (8,260.50 km) |
| Abertawe to Olney (Maryland) | 3,496.39 mi (5,626.90 km) |
| Abertawe to Olympia (Washington) | 4,722.73 mi (7,600.50 km) |
