| Clemson to Nuth | 4,355.01 mi (7,008.71 km) |
| Clemson to Oegstgeest | 4,265.85 mi (6,865.22 km) |
| Clemson to Oirschot | 4,316.31 mi (6,946.43 km) |
| Clemson to Oisterwijk | 4,310.17 mi (6,936.55 km) |
| Clemson to Oldebroek | 4,315.36 mi (6,944.91 km) |
| Clemson to Oldenzaal | 4,359.17 mi (7,015.40 km) |
| Clemson to Ommen | 4,333.76 mi (6,974.52 km) |
| Clemson to Oosterend | 4,307.54 mi (6,932.32 km) |
| Clemson to Oosterhout | 4,294.97 mi (6,912.09 km) |
| Clemson to Oosterwolde | 4,316.57 mi (6,946.84 km) |
| Clemson to Oostzaan | 4,275.99 mi (6,881.55 km) |
| Clemson to Opmeer | 4,271.92 mi (6,874.99 km) |
| Clemson to Oss | 4,318.00 mi (6,949.15 km) |
| Clemson to Oud-Beijerland | 4,272.38 mi (6,875.73 km) |
| Clemson to Oudenbosch | 4,283.06 mi (6,892.91 km) |
