| Leiria to Oerlinghausen | 1,185.26 mi (1,907.50 km) |
| Leiria to Oestrich-Winkel | 1,081.01 mi (1,739.72 km) |
| Leiria to Offenburg | 1,021.97 mi (1,644.69 km) |
| Leiria to Oftersheim | 1,079.26 mi (1,736.91 km) |
| Leiria to Ohrdruf | 1,213.06 mi (1,952.24 km) |
| Leiria to Ohringen | 1,108.93 mi (1,784.66 km) |
| Leiria to Olbernhau | 1,306.99 mi (2,103.40 km) |
| Leiria to Olching | 1,153.05 mi (1,855.65 km) |
| Leiria to Oldenburg | 1,223.52 mi (1,969.07 km) |
| Leiria to Oldenburg in Holstein | 1,358.28 mi (2,185.94 km) |
| Leiria to Olfen | 1,132.02 mi (1,821.80 km) |
| Leiria to Olpe | 1,116.53 mi (1,796.88 km) |
| Leiria to Olsberg | 1,152.88 mi (1,855.38 km) |
| Leiria to Oranienburg | 1,374.16 mi (2,211.49 km) |
| Leiria to Ortenberg | 1,133.47 mi (1,824.15 km) |
