| Suffolk to Oerlinghausen | 4,094.70 mi (6,589.78 km) |
| Suffolk to Oestrich-Winkel | 4,118.56 mi (6,628.17 km) |
| Suffolk to Offenburg | 4,156.57 mi (6,689.36 km) |
| Suffolk to Oftersheim | 4,159.40 mi (6,693.91 km) |
| Suffolk to Ohrdruf | 4,207.14 mi (6,770.73 km) |
| Suffolk to Ohringen | 4,201.95 mi (6,762.39 km) |
| Suffolk to Olbernhau | 4,315.27 mi (6,944.76 km) |
| Suffolk to Olching | 4,305.94 mi (6,929.74 km) |
| Suffolk to Oldenburg | 4,047.64 mi (6,514.05 km) |
| Suffolk to Oldenburg in Holstein | 4,120.46 mi (6,631.24 km) |
| Suffolk to Olfen | 4,049.91 mi (6,517.69 km) |
| Suffolk to Olpe | 4,085.53 mi (6,575.02 km) |
| Suffolk to Olsberg | 4,103.16 mi (6,603.40 km) |
| Suffolk to Oranienburg | 4,251.17 mi (6,841.59 km) |
| Suffolk to Ortenberg | 4,152.29 mi (6,682.47 km) |
