| Pilar de la Horadada to Oerlinghausen | 1,076.25 mi (1,732.06 km) |
| Pilar de la Horadada to Oestrich-Winkel | 943.88 mi (1,519.03 km) |
| Pilar de la Horadada to Offenburg | 852.74 mi (1,372.35 km) |
| Pilar de la Horadada to Oftersheim | 921.07 mi (1,482.31 km) |
| Pilar de la Horadada to Ohrdruf | 1,058.24 mi (1,703.08 km) |
| Pilar de la Horadada to Ohringen | 935.39 mi (1,505.36 km) |
| Pilar de la Horadada to Olbernhau | 1,122.92 mi (1,807.17 km) |
| Pilar de la Horadada to Olching | 937.48 mi (1,508.73 km) |
| Pilar de la Horadada to Oldenburg | 1,139.81 mi (1,834.35 km) |
| Pilar de la Horadada to Oldenburg in Holstein | 1,261.79 mi (2,030.66 km) |
| Pilar de la Horadada to Olfen | 1,035.79 mi (1,666.94 km) |
| Pilar de la Horadada to Olpe | 1,001.46 mi (1,611.70 km) |
| Pilar de la Horadada to Olsberg | 1,035.21 mi (1,666.01 km) |
| Pilar de la Horadada to Oranienburg | 1,228.97 mi (1,977.84 km) |
| Pilar de la Horadada to Ortenberg | 989.41 mi (1,592.31 km) |
