| Sidmouth to Opole | 923.91 mi (1,486.88 km) |
| Sidmouth to Orzesze | 965.26 mi (1,553.43 km) |
| Sidmouth to Osowa | 943.79 mi (1,518.88 km) |
| Sidmouth to Ostroda | 1,000.05 mi (1,609.42 km) |
| Sidmouth to Ostroleka | 1,065.42 mi (1,714.62 km) |
| Sidmouth to Ostrow Mazowiecka | 1,079.84 mi (1,737.83 km) |
| Sidmouth to Ostrow Wielkopolski | 911.55 mi (1,467.00 km) |
| Sidmouth to Ostrowiec Swietokrzyski | 1,070.94 mi (1,723.51 km) |
| Sidmouth to Ostrzeszow | 917.85 mi (1,477.14 km) |
| Sidmouth to Oswiecim | 987.24 mi (1,588.81 km) |
| Sidmouth to Otwock | 1,055.95 mi (1,699.39 km) |
| Sidmouth to Ozarow Mazowiecki | 1,035.74 mi (1,666.86 km) |
| Sidmouth to Ozimek | 935.97 mi (1,506.29 km) |
| Sidmouth to Ozorkow | 972.59 mi (1,565.23 km) |
| Sidmouth to Pabianice | 978.51 mi (1,574.75 km) |
