| San Giovanni Rotondo to Oerlinghausen | 783.18 mi (1,260.41 km) |
| San Giovanni Rotondo to Oestrich-Winkel | 682.84 mi (1,098.92 km) |
| San Giovanni Rotondo to Offenburg | 602.16 mi (969.08 km) |
| San Giovanni Rotondo to Oftersheim | 632.27 mi (1,017.55 km) |
| San Giovanni Rotondo to Ohrdruf | 674.01 mi (1,084.71 km) |
| San Giovanni Rotondo to Ohringen | 599.36 mi (964.58 km) |
| San Giovanni Rotondo to Olbernhau | 630.00 mi (1,013.88 km) |
| San Giovanni Rotondo to Olching | 498.12 mi (801.65 km) |
| San Giovanni Rotondo to Oldenburg | 864.17 mi (1,390.75 km) |
| San Giovanni Rotondo to Oldenburg in Holstein | 898.45 mi (1,445.91 km) |
| San Giovanni Rotondo to Olfen | 795.99 mi (1,281.02 km) |
| San Giovanni Rotondo to Olpe | 744.86 mi (1,198.74 km) |
| San Giovanni Rotondo to Olsberg | 749.69 mi (1,206.52 km) |
| San Giovanni Rotondo to Oranienburg | 772.59 mi (1,243.36 km) |
| San Giovanni Rotondo to Ortenberg | 677.80 mi (1,090.82 km) |
