| San Giljan to Oerlinghausen | 1,145.11 mi (1,842.88 km) |
| San Giljan to Oestrich-Winkel | 1,025.80 mi (1,650.87 km) |
| San Giljan to Offenburg | 928.82 mi (1,494.79 km) |
| San Giljan to Oftersheim | 975.93 mi (1,570.60 km) |
| San Giljan to Ohrdruf | 1,046.93 mi (1,684.87 km) |
| San Giljan to Ohringen | 951.60 mi (1,531.45 km) |
| San Giljan to Olbernhau | 1,020.62 mi (1,642.53 km) |
| San Giljan to Olching | 863.83 mi (1,390.20 km) |
| San Giljan to Oldenburg | 1,228.47 mi (1,977.04 km) |
| San Giljan to Oldenburg in Holstein | 1,281.73 mi (2,062.75 km) |
| San Giljan to Olfen | 1,146.26 mi (1,844.73 km) |
| San Giljan to Olpe | 1,094.16 mi (1,760.88 km) |
| San Giljan to Olsberg | 1,106.77 mi (1,781.17 km) |
| San Giljan to Oranienburg | 1,164.84 mi (1,874.63 km) |
| San Giljan to Ortenberg | 1,033.75 mi (1,663.66 km) |
