| Collinsville to Olympia Heights (Florida) | 1,056.99 mi (1,701.06 km) |
| Collinsville to Omaha (Nebraska) | 366.52 mi (589.86 km) |
| Collinsville to On Top of the World Designated Place (Florida) | 795.10 mi (1,279.60 km) |
| Collinsville to Onalaska (Wisconsin) | 365.42 mi (588.08 km) |
| Collinsville to Oneida (New York) | 807.36 mi (1,299.31 km) |
| Collinsville to Oneonta (New York) | 825.13 mi (1,327.91 km) |
| Collinsville to Ontario (California) | 1,562.55 mi (2,514.69 km) |
| Collinsville to Ontario (Oregon) | 1,439.67 mi (2,316.92 km) |
| Collinsville to Opa-locka (Florida) | 1,049.09 mi (1,688.35 km) |
| Collinsville to Opelika (Alabama) | 490.02 mi (788.61 km) |
| Collinsville to Opelousas (Louisiana) | 575.42 mi (926.05 km) |
| Collinsville to Orange (California) | 1,579.74 mi (2,542.35 km) |
| Collinsville to Orange (Texas) | 628.45 mi (1,011.39 km) |
| Collinsville to Orange City (Florida) | 837.88 mi (1,348.44 km) |
| Collinsville to Orangeburg (South Carolina) | 622.95 mi (1,002.54 km) |
