| Clemson to Opole | 4,832.56 mi (7,777.26 km) |
| Clemson to Orzesze | 4,881.78 mi (7,856.46 km) |
| Clemson to Osowa | 4,721.18 mi (7,598.00 km) |
| Clemson to Ostroda | 4,798.93 mi (7,723.13 km) |
| Clemson to Ostroleka | 4,878.02 mi (7,850.42 km) |
| Clemson to Ostrow Mazowiecka | 4,899.64 mi (7,885.20 km) |
| Clemson to Ostrow Wielkopolski | 4,793.75 mi (7,714.80 km) |
| Clemson to Ostrowiec Swietokrzyski | 4,951.55 mi (7,968.75 km) |
| Clemson to Ostrzeszow | 4,806.21 mi (7,734.85 km) |
| Clemson to Oswiecim | 4,903.63 mi (7,891.63 km) |
| Clemson to Otwock | 4,902.58 mi (7,889.95 km) |
| Clemson to Ozarow Mazowiecki | 4,882.17 mi (7,857.10 km) |
| Clemson to Ozimek | 4,842.86 mi (7,793.83 km) |
| Clemson to Ozorkow | 4,836.42 mi (7,783.46 km) |
| Clemson to Pabianice | 4,851.42 mi (7,807.61 km) |
