| Kempston to Odessa (Texas) | 4,971.60 mi (8,001.01 km) |
| Kempston to Ogden (Utah) | 4,798.23 mi (7,722.01 km) |
| Kempston to Oildale (California) | 5,346.38 mi (8,604.17 km) |
| Kempston to Ojus (Florida) | 4,394.90 mi (7,072.91 km) |
| Kempston to Okemos (Michigan) | 3,753.88 mi (6,041.28 km) |
| Kempston to Oklahoma City (Oklahoma) | 4,602.89 mi (7,407.64 km) |
| Kempston to Okmulgee (Oklahoma) | 4,538.85 mi (7,304.58 km) |
| Kempston to Olathe (Kansas) | 4,328.82 mi (6,966.56 km) |
| Kempston to Old Jamestown (Missouri) | 4,160.52 mi (6,695.71 km) |
| Kempston to Oldsmar (Florida) | 4,392.96 mi (7,069.79 km) |
| Kempston to Olean (New York) | 3,549.75 mi (5,712.78 km) |
| Kempston to Olive Branch (Mississippi) | 4,335.24 mi (6,976.89 km) |
| Kempston to Olivehurst (California) | 5,211.61 mi (8,387.27 km) |
| Kempston to Olney (Maryland) | 3,627.09 mi (5,837.23 km) |
| Kempston to Olympia (Washington) | 4,788.60 mi (7,706.50 km) |
