| Summerfield to Oerlinghausen | 3,997.73 mi (6,433.72 km) |
| Summerfield to Oestrich-Winkel | 4,026.44 mi (6,479.92 km) |
| Summerfield to Offenburg | 4,068.03 mi (6,546.86 km) |
| Summerfield to Oftersheim | 4,068.34 mi (6,547.36 km) |
| Summerfield to Ohrdruf | 4,111.44 mi (6,616.72 km) |
| Summerfield to Ohringen | 4,110.67 mi (6,615.48 km) |
| Summerfield to Olbernhau | 4,218.24 mi (6,788.61 km) |
| Summerfield to Olching | 4,215.61 mi (6,784.37 km) |
| Summerfield to Oldenburg | 3,948.29 mi (6,354.16 km) |
| Summerfield to Oldenburg in Holstein | 4,017.18 mi (6,465.03 km) |
| Summerfield to Olfen | 3,954.23 mi (6,363.72 km) |
| Summerfield to Olpe | 3,991.19 mi (6,423.20 km) |
| Summerfield to Olsberg | 4,007.68 mi (6,449.74 km) |
| Summerfield to Oranienburg | 4,149.83 mi (6,678.51 km) |
| Summerfield to Ortenberg | 4,058.70 mi (6,531.85 km) |
