| Annapolis to Oerlinghausen | 3,980.40 mi (6,405.84 km) |
| Annapolis to Oestrich-Winkel | 4,008.72 mi (6,451.41 km) |
| Annapolis to Offenburg | 4,050.04 mi (6,517.91 km) |
| Annapolis to Oftersheim | 4,050.54 mi (6,518.72 km) |
| Annapolis to Ohrdruf | 4,094.01 mi (6,588.67 km) |
| Annapolis to Ohringen | 4,092.89 mi (6,586.87 km) |
| Annapolis to Olbernhau | 4,200.93 mi (6,760.75 km) |
| Annapolis to Olching | 4,197.76 mi (6,755.65 km) |
| Annapolis to Oldenburg | 3,931.17 mi (6,326.61 km) |
| Annapolis to Oldenburg in Holstein | 4,000.44 mi (6,438.08 km) |
| Annapolis to Olfen | 3,936.79 mi (6,335.66 km) |
| Annapolis to Olpe | 3,973.64 mi (6,394.96 km) |
| Annapolis to Olsberg | 3,990.23 mi (6,421.66 km) |
| Annapolis to Oranienburg | 4,132.91 mi (6,651.27 km) |
| Annapolis to Ortenberg | 4,041.10 mi (6,503.52 km) |
