| Wausau to Olympia (Washington) | 1,590.20 mi (2,559.19 km) |
| Wausau to Olympia Heights (Florida) | 1,426.62 mi (2,295.92 km) |
| Wausau to Omaha (Nebraska) | 411.80 mi (662.73 km) |
| Wausau to On Top of the World Designated Place (Florida) | 1,167.07 mi (1,878.23 km) |
| Wausau to Onalaska (Wisconsin) | 106.96 mi (172.13 km) |
| Wausau to Oneida (New York) | 705.95 mi (1,136.12 km) |
| Wausau to Oneonta (New York) | 747.35 mi (1,202.75 km) |
| Wausau to Ontario (California) | 1,659.25 mi (2,670.31 km) |
| Wausau to Ontario (Oregon) | 1,342.15 mi (2,159.99 km) |
| Wausau to Opa-locka (Florida) | 1,416.85 mi (2,280.19 km) |
| Wausau to Opelika (Alabama) | 880.09 mi (1,416.36 km) |
| Wausau to Opelousas (Louisiana) | 1,006.19 mi (1,619.31 km) |
| Wausau to Orange (California) | 1,678.76 mi (2,701.70 km) |
| Wausau to Orange (Texas) | 1,049.41 mi (1,688.87 km) |
| Wausau to Orange City (Florida) | 1,198.06 mi (1,928.10 km) |
