| Imperial Beach to Oerlinghausen | 5,740.63 mi (9,238.65 km) |
| Imperial Beach to Oestrich-Winkel | 5,818.86 mi (9,364.54 km) |
| Imperial Beach to Offenburg | 5,893.20 mi (9,484.18 km) |
| Imperial Beach to Oftersheim | 5,868.37 mi (9,444.22 km) |
| Imperial Beach to Ohrdruf | 5,858.84 mi (9,428.89 km) |
| Imperial Beach to Ohringen | 5,905.15 mi (9,503.41 km) |
| Imperial Beach to Olbernhau | 5,941.79 mi (9,562.39 km) |
| Imperial Beach to Olching | 6,011.93 mi (9,675.27 km) |
| Imperial Beach to Oldenburg | 5,668.71 mi (9,122.91 km) |
| Imperial Beach to Oldenburg in Holstein | 5,684.79 mi (9,148.78 km) |
| Imperial Beach to Olfen | 5,715.01 mi (9,197.42 km) |
| Imperial Beach to Olpe | 5,763.20 mi (9,274.98 km) |
| Imperial Beach to Olsberg | 5,766.08 mi (9,279.62 km) |
| Imperial Beach to Oranienburg | 5,828.79 mi (9,380.53 km) |
| Imperial Beach to Ortenberg | 5,833.16 mi (9,387.56 km) |
