| Worcester to Orbetello | 919.03 mi (1,479.03 km) |
| Worcester to Oria | 1,237.38 mi (1,991.37 km) |
| Worcester to Oristano | 992.25 mi (1,596.88 km) |
| Worcester to Orta Nova | 1,127.31 mi (1,814.23 km) |
| Worcester to Orte | 955.79 mi (1,538.19 km) |
| Worcester to Ortona | 1,029.79 mi (1,657.28 km) |
| Worcester to Orvieto | 933.12 mi (1,501.71 km) |
| Worcester to Orzinuovi | 723.72 mi (1,164.71 km) |
| Worcester to Osimo | 941.19 mi (1,514.70 km) |
| Worcester to Ospitaletto | 721.07 mi (1,160.45 km) |
| Worcester to Ostuni | 1,223.78 mi (1,969.48 km) |
| Worcester to Ottaviano | 1,110.39 mi (1,787.00 km) |
| Worcester to Ovada | 720.05 mi (1,158.80 km) |
| Worcester to Ozieri | 961.51 mi (1,547.39 km) |
| Worcester to Paceco | 1,212.71 mi (1,951.67 km) |
