| London Colney to Reidsville (North Carolina) | 3,878.73 mi (6,242.21 km) |
| London Colney to Reisterstown (Maryland) | 3,619.12 mi (5,824.41 km) |
| London Colney to Rendon (Texas) | 4,761.79 mi (7,663.35 km) |
| London Colney to Reno (Nevada) | 5,159.35 mi (8,303.17 km) |
| London Colney to Renton (Washington) | 4,771.43 mi (7,678.87 km) |
| London Colney to Republic (Missouri) | 4,384.04 mi (7,055.44 km) |
| London Colney to Reston (Virginia) | 3,663.49 mi (5,895.82 km) |
| London Colney to Revere (Massachusetts) | 3,254.60 mi (5,237.77 km) |
| London Colney to Rexburg (Idaho) | 4,675.88 mi (7,525.09 km) |
| London Colney to Reynoldsburg (Ohio) | 3,835.61 mi (6,172.82 km) |
| London Colney to Rialto (California) | 5,393.74 mi (8,680.39 km) |
| London Colney to Richardson (Texas) | 4,721.24 mi (7,598.11 km) |
| London Colney to Richfield (Minnesota) | 4,002.00 mi (6,440.60 km) |
| London Colney to Richfield (Wisconsin) | 3,894.01 mi (6,266.81 km) |
| London Colney to Richland (Washington) | 4,760.92 mi (7,661.97 km) |
