| Wausau to Oerlinghausen | 4,174.98 mi (6,718.99 km) |
| Wausau to Oestrich-Winkel | 4,232.81 mi (6,812.05 km) |
| Wausau to Offenburg | 4,294.47 mi (6,911.28 km) |
| Wausau to Oftersheim | 4,279.92 mi (6,887.86 km) |
| Wausau to Ohrdruf | 4,293.49 mi (6,909.70 km) |
| Wausau to Ohringen | 4,319.74 mi (6,951.96 km) |
| Wausau to Olbernhau | 4,389.02 mi (7,063.45 km) |
| Wausau to Olching | 4,427.60 mi (7,125.53 km) |
| Wausau to Oldenburg | 4,111.80 mi (6,617.31 km) |
| Wausau to Oldenburg in Holstein | 4,152.92 mi (6,683.48 km) |
| Wausau to Olfen | 4,140.87 mi (6,664.09 km) |
| Wausau to Olpe | 4,185.03 mi (6,735.16 km) |
| Wausau to Olsberg | 4,193.99 mi (6,749.58 km) |
| Wausau to Oranienburg | 4,294.69 mi (6,911.64 km) |
| Wausau to Ortenberg | 4,255.22 mi (6,848.11 km) |
