| Boulder to Frankfort (Illinois) | 915.53 mi (1,473.41 km) |
| Boulder to Frankfort (Indiana) | 987.51 mi (1,589.24 km) |
| Boulder to Frankfort (Kentucky) | 1,097.94 mi (1,766.97 km) |
| Boulder to Franklin (Indiana) | 1,018.37 mi (1,638.91 km) |
| Boulder to Franklin (Ohio) | 1,110.56 mi (1,787.27 km) |
| Boulder to Franklin (Tennessee) | 1,039.43 mi (1,672.79 km) |
| Boulder to Franklin (Wisconsin) | 912.72 mi (1,468.88 km) |
| Boulder to Franklin Farm (Virginia) | 1,481.68 mi (2,384.54 km) |
| Boulder to Franklin Lakes (New Jersey) | 1,623.43 mi (2,612.66 km) |
| Boulder to Franklin Park (Illinois) | 914.14 mi (1,471.17 km) |
| Boulder to Franklin Park (New Jersey) | 1,611.84 mi (2,594.01 km) |
| Boulder to Franklin Park (Pennsylvania) | 1,321.33 mi (2,126.48 km) |
| Boulder to Franklin Square (New York) | 1,653.97 mi (2,661.81 km) |
| Boulder to Fraser (Michigan) | 1,167.48 mi (1,878.88 km) |
| Boulder to Frederick (Colorado) | 16.02 mi (25.77 km) |
