| Waunakee to Oerlinghausen | 4,256.15 mi (6,849.60 km) |
| Waunakee to Oestrich-Winkel | 4,310.52 mi (6,937.12 km) |
| Waunakee to Offenburg | 4,369.78 mi (7,032.48 km) |
| Waunakee to Oftersheim | 4,357.10 mi (7,012.07 km) |
| Waunakee to Ohrdruf | 4,374.37 mi (7,039.88 km) |
| Waunakee to Ohringen | 4,397.34 mi (7,076.84 km) |
| Waunakee to Olbernhau | 4,471.51 mi (7,196.20 km) |
| Waunakee to Olching | 4,505.10 mi (7,250.26 km) |
| Waunakee to Oldenburg | 4,194.45 mi (6,750.32 km) |
| Waunakee to Oldenburg in Holstein | 4,238.92 mi (6,821.88 km) |
| Waunakee to Olfen | 4,220.80 mi (6,792.72 km) |
| Waunakee to Olpe | 4,264.18 mi (6,862.54 km) |
| Waunakee to Olsberg | 4,274.10 mi (6,878.50 km) |
| Waunakee to Oranienburg | 4,380.00 mi (7,048.93 km) |
| Waunakee to Ortenberg | 4,334.23 mi (6,975.26 km) |
