| Houghton le Spring to Odessa (Texas) | 4,847.07 mi (7,800.61 km) |
| Houghton le Spring to Ogden (Utah) | 4,644.67 mi (7,474.88 km) |
| Houghton le Spring to Oildale (California) | 5,190.19 mi (8,352.80 km) |
| Houghton le Spring to Ojus (Florida) | 4,329.02 mi (6,966.89 km) |
| Houghton le Spring to Okemos (Michigan) | 3,638.85 mi (5,856.16 km) |
| Houghton le Spring to Oklahoma City (Oklahoma) | 4,480.71 mi (7,211.01 km) |
| Houghton le Spring to Okmulgee (Oklahoma) | 4,419.08 mi (7,111.82 km) |
| Houghton le Spring to Olathe (Kansas) | 4,204.77 mi (6,766.92 km) |
| Houghton le Spring to Old Jamestown (Missouri) | 4,044.34 mi (6,508.74 km) |
| Houghton le Spring to Oldsmar (Florida) | 4,316.36 mi (6,946.52 km) |
| Houghton le Spring to Olean (New York) | 3,446.73 mi (5,546.97 km) |
| Houghton le Spring to Olive Branch (Mississippi) | 4,228.18 mi (6,804.60 km) |
| Houghton le Spring to Olivehurst (California) | 5,048.33 mi (8,124.49 km) |
| Houghton le Spring to Olney (Maryland) | 3,534.73 mi (5,688.60 km) |
| Houghton le Spring to Olympia (Washington) | 4,616.43 mi (7,429.42 km) |
