| Hockessin to Oerlinghausen | 3,909.92 mi (6,292.42 km) |
| Hockessin to Oestrich-Winkel | 3,938.75 mi (6,338.80 km) |
| Hockessin to Offenburg | 3,980.51 mi (6,406.01 km) |
| Hockessin to Oftersheim | 3,980.70 mi (6,406.31 km) |
| Hockessin to Ohrdruf | 4,023.65 mi (6,475.44 km) |
| Hockessin to Ohringen | 4,023.01 mi (6,474.41 km) |
| Hockessin to Olbernhau | 4,130.44 mi (6,647.30 km) |
| Hockessin to Olching | 4,127.99 mi (6,643.36 km) |
| Hockessin to Oldenburg | 3,860.48 mi (6,212.84 km) |
| Hockessin to Oldenburg in Holstein | 3,929.46 mi (6,323.85 km) |
| Hockessin to Olfen | 3,866.45 mi (6,222.44 km) |
| Hockessin to Olpe | 3,903.43 mi (6,281.97 km) |
| Hockessin to Olsberg | 3,919.90 mi (6,308.47 km) |
| Hockessin to Oranienburg | 4,062.05 mi (6,537.24 km) |
| Hockessin to Ortenberg | 3,970.96 mi (6,390.65 km) |
