| Herndon to Oststeinbek | 4,027.70 mi (6,481.95 km) |
| Herndon to Ottendorf-Okrilla | 4,237.89 mi (6,820.23 km) |
| Herndon to Ottersberg | 4,001.75 mi (6,440.20 km) |
| Herndon to Ottobrunn | 4,252.45 mi (6,843.66 km) |
| Herndon to Ottweiler | 4,028.78 mi (6,483.69 km) |
| Herndon to Overath | 3,989.42 mi (6,420.35 km) |
| Herndon to Oyten | 3,997.80 mi (6,433.84 km) |
| Herndon to Paderborn | 4,025.23 mi (6,477.99 km) |
| Herndon to Papenburg | 3,935.85 mi (6,334.15 km) |
| Herndon to Parchim | 4,093.66 mi (6,588.11 km) |
| Herndon to Pasewalk | 4,171.31 mi (6,713.08 km) |
| Herndon to Passau | 4,308.62 mi (6,934.05 km) |
| Herndon to Pattensen | 4,048.84 mi (6,515.98 km) |
| Herndon to Pegnitz | 4,193.81 mi (6,749.29 km) |
| Herndon to Peine | 4,065.22 mi (6,542.35 km) |
