| Truro to Opole | 1,007.24 mi (1,621.00 km) |
| Truro to Orzesze | 1,048.08 mi (1,686.72 km) |
| Truro to Osowa | 1,028.29 mi (1,654.88 km) |
| Truro to Ostroda | 1,084.81 mi (1,745.84 km) |
| Truro to Ostroleka | 1,150.21 mi (1,851.09 km) |
| Truro to Ostrow Mazowiecka | 1,164.60 mi (1,874.25 km) |
| Truro to Ostrow Wielkopolski | 995.78 mi (1,602.56 km) |
| Truro to Ostrowiec Swietokrzyski | 1,154.81 mi (1,858.49 km) |
| Truro to Ostrzeszow | 1,001.91 mi (1,612.42 km) |
| Truro to Oswiecim | 1,069.99 mi (1,721.98 km) |
| Truro to Otwock | 1,140.52 mi (1,835.49 km) |
| Truro to Ozarow Mazowiecki | 1,120.34 mi (1,803.01 km) |
| Truro to Ozimek | 1,019.34 mi (1,640.46 km) |
| Truro to Ozorkow | 1,057.06 mi (1,701.17 km) |
| Truro to Pabianice | 1,062.79 mi (1,710.40 km) |
