| Prairie Ridge to Olympia (Washington) | 36.21 mi (58.28 km) |
| Prairie Ridge to Olympia Heights (Florida) | 2,708.39 mi (4,358.74 km) |
| Prairie Ridge to Omaha (Nebraska) | 1,347.24 mi (2,168.17 km) |
| Prairie Ridge to On Top of the World Designated Place (Florida) | 2,461.84 mi (3,961.95 km) |
| Prairie Ridge to Onalaska (Wisconsin) | 1,504.32 mi (2,420.97 km) |
| Prairie Ridge to Oneida (New York) | 2,249.99 mi (3,621.00 km) |
| Prairie Ridge to Oneonta (New York) | 2,295.11 mi (3,693.63 km) |
| Prairie Ridge to Ontario (California) | 935.74 mi (1,505.92 km) |
| Prairie Ridge to Ontario (Oregon) | 329.69 mi (530.59 km) |
| Prairie Ridge to Opa-locka (Florida) | 2,703.69 mi (4,351.17 km) |
| Prairie Ridge to Opelika (Alabama) | 2,163.55 mi (3,481.90 km) |
| Prairie Ridge to Opelousas (Louisiana) | 1,964.05 mi (3,160.84 km) |
| Prairie Ridge to Orange (California) | 948.85 mi (1,527.03 km) |
| Prairie Ridge to Orange (Texas) | 1,913.06 mi (3,078.78 km) |
| Prairie Ridge to Orange City (Florida) | 2,514.86 mi (4,047.27 km) |
