| Saint Austell to Oerlinghausen | 593.01 mi (954.36 km) |
| Saint Austell to Oestrich-Winkel | 565.81 mi (910.59 km) |
| Saint Austell to Offenburg | 585.72 mi (942.63 km) |
| Saint Austell to Oftersheim | 598.72 mi (963.54 km) |
| Saint Austell to Ohrdruf | 680.57 mi (1,095.27 km) |
| Saint Austell to Ohringen | 641.52 mi (1,032.42 km) |
| Saint Austell to Olbernhau | 794.77 mi (1,279.06 km) |
| Saint Austell to Olching | 739.48 mi (1,190.08 km) |
| Saint Austell to Oldenburg | 588.11 mi (946.47 km) |
| Saint Austell to Oldenburg in Holstein | 714.32 mi (1,149.59 km) |
| Saint Austell to Olfen | 536.82 mi (863.92 km) |
| Saint Austell to Olpe | 553.97 mi (891.53 km) |
| Saint Austell to Olsberg | 582.45 mi (937.36 km) |
| Saint Austell to Oranienburg | 790.08 mi (1,271.51 km) |
| Saint Austell to Ortenberg | 609.56 mi (980.99 km) |
