| Billericay to Orbetello | 811.52 mi (1,306.01 km) |
| Billericay to Oria | 1,122.74 mi (1,806.87 km) |
| Billericay to Oristano | 899.31 mi (1,447.31 km) |
| Billericay to Orta Nova | 1,013.80 mi (1,631.55 km) |
| Billericay to Orte | 845.63 mi (1,360.90 km) |
| Billericay to Ortona | 916.41 mi (1,474.82 km) |
| Billericay to Orvieto | 822.94 mi (1,324.40 km) |
| Billericay to Orzinuovi | 611.29 mi (983.78 km) |
| Billericay to Osimo | 827.08 mi (1,331.06 km) |
| Billericay to Ospitaletto | 607.94 mi (978.38 km) |
| Billericay to Ostuni | 1,108.89 mi (1,784.59 km) |
| Billericay to Ottaviano | 999.54 mi (1,608.61 km) |
| Billericay to Ovada | 613.31 mi (987.02 km) |
| Billericay to Ozieri | 865.40 mi (1,392.72 km) |
| Billericay to Paceco | 1,111.38 mi (1,788.60 km) |
