| Davidson to Oerlinghausen | 4,318.70 mi (6,950.27 km) |
| Davidson to Oestrich-Winkel | 4,346.59 mi (6,995.16 km) |
| Davidson to Offenburg | 4,387.28 mi (7,060.65 km) |
| Davidson to Oftersheim | 4,388.26 mi (7,062.21 km) |
| Davidson to Ohrdruf | 4,432.25 mi (7,133.01 km) |
| Davidson to Ohringen | 4,430.64 mi (7,130.43 km) |
| Davidson to Olbernhau | 4,539.23 mi (7,305.19 km) |
| Davidson to Olching | 4,535.36 mi (7,298.96 km) |
| Davidson to Oldenburg | 4,269.48 mi (6,871.06 km) |
| Davidson to Oldenburg in Holstein | 4,338.46 mi (6,982.08 km) |
| Davidson to Olfen | 4,275.02 mi (6,879.99 km) |
| Davidson to Olpe | 4,311.77 mi (6,939.13 km) |
| Davidson to Olsberg | 4,328.45 mi (6,965.97 km) |
| Davidson to Oranienburg | 4,471.11 mi (7,195.56 km) |
| Davidson to Ortenberg | 4,379.15 mi (7,047.57 km) |
