| Greer to Oerlinghausen | 4,401.08 mi (7,082.86 km) |
| Greer to Oestrich-Winkel | 4,430.10 mi (7,129.56 km) |
| Greer to Offenburg | 4,471.54 mi (7,196.25 km) |
| Greer to Oftersheim | 4,472.00 mi (7,196.98 km) |
| Greer to Ohrdruf | 4,514.93 mi (7,266.08 km) |
| Greer to Ohringen | 4,514.33 mi (7,265.11 km) |
| Greer to Olbernhau | 4,621.57 mi (7,437.70 km) |
| Greer to Olching | 4,619.24 mi (7,433.95 km) |
| Greer to Oldenburg | 4,351.25 mi (7,002.66 km) |
| Greer to Oldenburg in Holstein | 4,419.11 mi (7,111.87 km) |
| Greer to Olfen | 4,357.73 mi (7,013.10 km) |
| Greer to Olpe | 4,394.79 mi (7,072.74 km) |
| Greer to Olsberg | 4,411.20 mi (7,099.14 km) |
| Greer to Oranienburg | 4,552.30 mi (7,326.22 km) |
| Greer to Ortenberg | 4,462.34 mi (7,181.44 km) |
