| Darlaston to Orbetello | 931.37 mi (1,498.89 km) |
| Darlaston to Oria | 1,245.72 mi (2,004.79 km) |
| Darlaston to Oristano | 1,009.59 mi (1,624.77 km) |
| Darlaston to Orta Nova | 1,136.46 mi (1,828.96 km) |
| Darlaston to Orte | 966.87 mi (1,556.03 km) |
| Darlaston to Ortona | 1,039.01 mi (1,672.13 km) |
| Darlaston to Orvieto | 944.19 mi (1,519.53 km) |
| Darlaston to Orzinuovi | 733.46 mi (1,180.40 km) |
| Darlaston to Osimo | 949.90 mi (1,528.72 km) |
| Darlaston to Ospitaletto | 730.38 mi (1,175.43 km) |
| Darlaston to Ostuni | 1,231.93 mi (1,982.59 km) |
| Darlaston to Ottaviano | 1,121.15 mi (1,804.32 km) |
| Darlaston to Ovada | 732.61 mi (1,179.02 km) |
| Darlaston to Ozieri | 977.93 mi (1,573.83 km) |
| Darlaston to Paceco | 1,227.59 mi (1,975.62 km) |
