| Thornton to Rancho Cordova (California) | 5,109.97 mi (8,223.70 km) |
| Thornton to Rancho Cucamonga (California) | 5,257.12 mi (8,460.52 km) |
| Thornton to Rancho Mirage (California) | 5,241.94 mi (8,436.09 km) |
| Thornton to Rancho Palos Verdes (California) | 5,303.42 mi (8,535.04 km) |
| Thornton to Rancho San Diego (California) | 5,315.33 mi (8,554.20 km) |
| Thornton to Rancho Santa Margarita (California) | 5,286.62 mi (8,508.00 km) |
| Thornton to Randallstown (Maryland) | 3,518.26 mi (5,662.09 km) |
| Thornton to Rantoul (Illinois) | 3,908.52 mi (6,290.15 km) |
| Thornton to Rapid City (South Dakota) | 4,247.53 mi (6,835.74 km) |
| Thornton to Ravenna (Ohio) | 3,606.55 mi (5,804.18 km) |
| Thornton to Raymondville (Texas) | 4,990.95 mi (8,032.16 km) |
| Thornton to Raymore (Missouri) | 4,215.36 mi (6,783.96 km) |
| Thornton to Raytown (Missouri) | 4,205.80 mi (6,768.59 km) |
| Thornton to Reading (Ohio) | 3,820.77 mi (6,148.94 km) |
| Thornton to Reading (Pennsylvania) | 3,438.90 mi (5,534.38 km) |
