| Peoria to Oerlinghausen | 4,384.15 mi (7,055.62 km) |
| Peoria to Oestrich-Winkel | 4,434.46 mi (7,136.58 km) |
| Peoria to Offenburg | 4,490.83 mi (7,227.30 km) |
| Peoria to Oftersheim | 4,480.36 mi (7,210.45 km) |
| Peoria to Ohrdruf | 4,501.96 mi (7,245.20 km) |
| Peoria to Ohringen | 4,521.07 mi (7,275.96 km) |
| Peoria to Olbernhau | 4,600.87 mi (7,404.39 km) |
| Peoria to Olching | 4,628.61 mi (7,449.03 km) |
| Peoria to Oldenburg | 4,324.23 mi (6,959.17 km) |
| Peoria to Oldenburg in Holstein | 4,372.50 mi (7,036.86 km) |
| Peoria to Olfen | 4,347.40 mi (6,996.47 km) |
| Peoria to Olpe | 4,389.85 mi (7,064.79 km) |
| Peoria to Olsberg | 4,400.87 mi (7,082.51 km) |
| Peoria to Oranienburg | 4,512.68 mi (7,262.45 km) |
| Peoria to Ortenberg | 4,459.66 mi (7,177.12 km) |
