| Didcot to Ondokuzmayis | 1,880.99 mi (3,027.16 km) |
| Didcot to Ordu | 1,978.09 mi (3,183.44 km) |
| Didcot to Ortahisar | 1,949.05 mi (3,136.69 km) |
| Didcot to Ortakent | 1,711.67 mi (2,754.67 km) |
| Didcot to Ortaklar | 1,682.21 mi (2,707.26 km) |
| Didcot to Ortakoy | 1,909.48 mi (3,073.00 km) |
| Didcot to Ortakoy | 1,895.30 mi (3,050.18 km) |
| Didcot to Osmaneli | 1,672.65 mi (2,691.86 km) |
| Didcot to Osmaniye | 2,075.67 mi (3,340.47 km) |
| Didcot to Ozdere | 1,661.15 mi (2,673.36 km) |
| Didcot to Palu | 2,160.02 mi (3,476.22 km) |
| Didcot to Pamukkale | 1,745.00 mi (2,808.30 km) |
| Didcot to Patnos | 2,262.11 mi (3,640.52 km) |
| Didcot to Pazar | 1,940.44 mi (3,122.84 km) |
| Didcot to Pazarcik | 2,100.94 mi (3,381.14 km) |
