| Houghton le Spring to Oakley (California) | 5,116.38 mi (8,234.02 km) |
| Houghton le Spring to Oakton (Virginia) | 3,556.02 mi (5,722.85 km) |
| Houghton le Spring to Oakville (Missouri) | 4,065.61 mi (6,542.96 km) |
| Houghton le Spring to Oatfield (Oregon) | 4,703.99 mi (7,570.33 km) |
| Houghton le Spring to Ocala (Florida) | 4,236.54 mi (6,818.04 km) |
| Houghton le Spring to Ocean Acres (New Jersey) | 3,398.75 mi (5,469.76 km) |
| Houghton le Spring to Ocean City (New Jersey) | 3,433.78 mi (5,526.14 km) |
| Houghton le Spring to Ocean Pines (Maryland) | 3,497.35 mi (5,628.44 km) |
| Houghton le Spring to Ocean Pointe (Hawaii) | 6,995.42 mi (11,258.04 km) |
| Houghton le Spring to Ocean Springs (Mississippi) | 4,427.79 mi (7,125.83 km) |
| Houghton le Spring to Oceanside (California) | 5,267.09 mi (8,476.57 km) |
| Houghton le Spring to Oceanside (New York) | 3,331.95 mi (5,362.25 km) |
| Houghton le Spring to Ocoee (Florida) | 4,243.89 mi (6,829.87 km) |
| Houghton le Spring to Oconomowoc (Wisconsin) | 3,766.96 mi (6,062.34 km) |
| Houghton le Spring to Odenton (Maryland) | 3,524.10 mi (5,671.49 km) |
