| Koropi to Olympia Heights (Florida) | 5,853.31 mi (9,419.99 km) |
| Koropi to Omaha (Nebraska) | 5,785.17 mi (9,310.34 km) |
| Koropi to On Top of the World Designated Place (Florida) | 5,794.32 mi (9,325.06 km) |
| Koropi to Onalaska (Wisconsin) | 5,482.62 mi (8,823.43 km) |
| Koropi to Oneida (New York) | 4,911.93 mi (7,904.98 km) |
| Koropi to Oneonta (New York) | 4,911.44 mi (7,904.20 km) |
| Koropi to Ontario (California) | 6,885.56 mi (11,081.24 km) |
| Koropi to Ontario (Oregon) | 6,270.15 mi (10,090.83 km) |
| Koropi to Opa-locka (Florida) | 5,841.54 mi (9,401.05 km) |
| Koropi to Opelika (Alabama) | 5,772.12 mi (9,289.34 km) |
| Koropi to Opelousas (Louisiana) | 6,160.93 mi (9,915.05 km) |
| Koropi to Orange (California) | 6,905.82 mi (11,113.85 km) |
| Koropi to Orange (Texas) | 6,251.21 mi (10,060.35 km) |
| Koropi to Orange City (Florida) | 5,755.81 mi (9,263.09 km) |
| Koropi to Orangeburg (South Carolina) | 5,535.92 mi (8,909.19 km) |
