| Stevenage to Orbetello | 843.46 mi (1,357.42 km) |
| Stevenage to Oria | 1,155.31 mi (1,859.29 km) |
| Stevenage to Oristano | 928.87 mi (1,494.87 km) |
| Stevenage to Orta Nova | 1,046.34 mi (1,683.92 km) |
| Stevenage to Orte | 877.89 mi (1,412.83 km) |
| Stevenage to Ortona | 948.94 mi (1,527.17 km) |
| Stevenage to Orvieto | 855.21 mi (1,376.32 km) |
| Stevenage to Orzinuovi | 643.74 mi (1,035.99 km) |
| Stevenage to Osimo | 859.64 mi (1,383.46 km) |
| Stevenage to Ospitaletto | 640.43 mi (1,030.68 km) |
| Stevenage to Ostuni | 1,141.47 mi (1,837.01 km) |
| Stevenage to Ottaviano | 1,031.89 mi (1,660.66 km) |
| Stevenage to Ovada | 645.09 mi (1,038.17 km) |
| Stevenage to Ozieri | 895.52 mi (1,441.21 km) |
| Stevenage to Paceco | 1,142.48 mi (1,838.65 km) |
