| The Woodlands to Oerlinghausen | 5,154.95 mi (8,296.09 km) |
| The Woodlands to Oestrich-Winkel | 5,196.89 mi (8,363.59 km) |
| The Woodlands to Offenburg | 5,246.88 mi (8,444.03 km) |
| The Woodlands to Oftersheim | 5,241.22 mi (8,434.94 km) |
| The Woodlands to Ohrdruf | 5,271.60 mi (8,483.82 km) |
| The Woodlands to Ohringen | 5,282.75 mi (8,501.77 km) |
| The Woodlands to Olbernhau | 5,373.70 mi (8,648.14 km) |
| The Woodlands to Olching | 5,389.49 mi (8,673.55 km) |
| The Woodlands to Oldenburg | 5,098.54 mi (8,205.31 km) |
| The Woodlands to Oldenburg in Holstein | 5,153.49 mi (8,293.75 km) |
| The Woodlands to Olfen | 5,115.55 mi (8,232.68 km) |
| The Woodlands to Olpe | 5,155.99 mi (8,297.76 km) |
| The Woodlands to Olsberg | 5,169.18 mi (8,318.99 km) |
| The Woodlands to Oranienburg | 5,291.82 mi (8,516.37 km) |
| The Woodlands to Ortenberg | 5,225.09 mi (8,408.97 km) |
