| Warendorf to Olympia Heights (Florida) | 4,769.12 mi (7,675.16 km) |
| Warendorf to Omaha (Nebraska) | 4,559.28 mi (7,337.45 km) |
| Warendorf to On Top of the World Designated Place (Florida) | 4,673.42 mi (7,521.15 km) |
| Warendorf to Onalaska (Wisconsin) | 4,259.27 mi (6,854.64 km) |
| Warendorf to Oneida (New York) | 3,731.93 mi (6,005.96 km) |
| Warendorf to Oneonta (New York) | 3,737.20 mi (6,014.44 km) |
| Warendorf to Ontario (California) | 5,648.21 mi (9,089.91 km) |
| Warendorf to Ontario (Oregon) | 5,039.83 mi (8,110.82 km) |
| Warendorf to Opa-locka (Florida) | 4,756.57 mi (7,654.96 km) |
| Warendorf to Opelika (Alabama) | 4,613.04 mi (7,423.97 km) |
| Warendorf to Opelousas (Louisiana) | 4,982.60 mi (8,018.72 km) |
| Warendorf to Orange (California) | 5,668.49 mi (9,122.55 km) |
| Warendorf to Orange (Texas) | 5,067.58 mi (8,155.48 km) |
| Warendorf to Orange City (Florida) | 4,641.95 mi (7,470.50 km) |
| Warendorf to Orangeburg (South Carolina) | 4,393.61 mi (7,070.84 km) |
