| Havre de Grace to Oststeinbek | 3,951.48 mi (6,359.30 km) |
| Havre de Grace to Ottendorf-Okrilla | 4,161.22 mi (6,696.83 km) |
| Havre de Grace to Ottersberg | 3,925.27 mi (6,317.12 km) |
| Havre de Grace to Ottobrunn | 4,174.69 mi (6,718.51 km) |
| Havre de Grace to Ottweiler | 3,950.98 mi (6,358.48 km) |
| Havre de Grace to Overath | 3,912.06 mi (6,295.85 km) |
| Havre de Grace to Oyten | 3,921.30 mi (6,310.72 km) |
| Havre de Grace to Paderborn | 3,948.24 mi (6,354.07 km) |
| Havre de Grace to Papenburg | 3,859.20 mi (6,210.78 km) |
| Havre de Grace to Parchim | 4,017.58 mi (6,465.66 km) |
| Havre de Grace to Pasewalk | 4,095.51 mi (6,591.08 km) |
| Havre de Grace to Passau | 4,231.14 mi (6,809.36 km) |
| Havre de Grace to Pattensen | 3,972.12 mi (6,392.51 km) |
| Havre de Grace to Pegnitz | 4,116.47 mi (6,624.83 km) |
| Havre de Grace to Peine | 3,988.57 mi (6,418.98 km) |
