| Meridian to Oerlinghausen | 5,065.95 mi (8,152.86 km) |
| Meridian to Oestrich-Winkel | 5,154.71 mi (8,295.70 km) |
| Meridian to Offenburg | 5,236.12 mi (8,426.72 km) |
| Meridian to Oftersheim | 5,205.06 mi (8,376.73 km) |
| Meridian to Ohrdruf | 5,182.56 mi (8,340.52 km) |
| Meridian to Ohringen | 5,239.53 mi (8,432.21 km) |
| Meridian to Olbernhau | 5,258.18 mi (8,462.22 km) |
| Meridian to Olching | 5,344.38 mi (8,600.95 km) |
| Meridian to Oldenburg | 4,990.44 mi (8,031.34 km) |
| Meridian to Oldenburg in Holstein | 4,994.64 mi (8,038.09 km) |
| Meridian to Olfen | 5,045.27 mi (8,119.57 km) |
| Meridian to Olpe | 5,095.13 mi (8,199.81 km) |
| Meridian to Olsberg | 5,094.56 mi (8,198.91 km) |
| Meridian to Oranienburg | 5,137.91 mi (8,268.67 km) |
| Meridian to Ortenberg | 5,164.07 mi (8,310.77 km) |
