| Shannon to Oerlinghausen | 740.19 mi (1,191.22 km) |
| Shannon to Oestrich-Winkel | 749.65 mi (1,206.45 km) |
| Shannon to Offenburg | 790.96 mi (1,272.92 km) |
| Shannon to Oftersheim | 790.34 mi (1,271.93 km) |
| Shannon to Ohrdruf | 845.41 mi (1,360.56 km) |
| Shannon to Ohringen | 832.84 mi (1,340.33 km) |
| Shannon to Olbernhau | 957.48 mi (1,540.91 km) |
| Shannon to Olching | 937.35 mi (1,508.51 km) |
| Shannon to Oldenburg | 710.41 mi (1,143.30 km) |
| Shannon to Oldenburg in Holstein | 816.26 mi (1,313.64 km) |
| Shannon to Olfen | 689.95 mi (1,110.36 km) |
| Shannon to Olpe | 720.49 mi (1,159.52 km) |
| Shannon to Olsberg | 741.74 mi (1,193.72 km) |
| Shannon to Oranienburg | 921.19 mi (1,482.50 km) |
| Shannon to Ortenberg | 785.19 mi (1,263.64 km) |
