6422 Routes
- Clarks Green Pennsylvania -> Potsdam Minnesota
- Clarks Grove Minnesota -> Lufkin Texas
- Clarks Hill Indiana -> Ohiopyle Pennsylvania
- Clarks Hill South Carolina -> Calestown South Carolina
- Clarks Hill South Carolina -> San Geronimo Texas
- Clarks Hill South Carolina -> Westville Georgia
- Clarks Indiana -> Old Town Maine
- Clarks Louisiana -> Falcon Missouri
- Clarks Louisiana -> Jamestown
- Clarks Mill Georgia -> Dorset Minnesota
- Clarks Mills Wisconsin -> Broomes Island Maryland
- Clarks Mills Wisconsin -> Potato Creek South Dakota
- Clarks Nebraska -> Alma Nebraska
- Clarks Summit Pennsylvania -> Corunna Michigan
- Clarks Summit Pennsylvania -> Stoystown Pennsylvania
- Clarksburg California 95612 -> Eureka California 95503
- Clarksburg California 95612 -> Redding California 96003
- Clarksburg Illinois -> Dixmoor Illinois
- Clarksburg Illinois -> Pembroke Virginia
- Clarksburg Maryland -> Piney Point Maryland
- Clarksburg Missouri -> Dundas Wisconsin
- Clarksburg Missouri -> Perkins Minnesota
- Clarksburg Ohio -> Blue Level
- Clarksburg Ohio -> Gallup Ohio
- Clarksburg Ohio -> Woodlawn Virginia
- Clarksburg Tennesse -> Sutton Alaska
- Clarksdale Mississippi -> East Portal Colorado
- Clarksdale Mississippi -> Powder Wash Colorado
- Clarksdale Mississippi -> Union Creek Oregon
- Clarksdale Missouri -> Stilesville New York
- Clarkson -> Montezuma Colorado
- Clarkson Nebraska -> Coral Hills Maryland
- Clarkson Nebraska -> Cosby Missouri
- Clarkson Nebraska -> Moulton Iowa
- Clarkston Georgia -> Beloit Wisconsin
- Clarkston Georgia -> Pleasantville Maryland
- Clarkston Heights Washington -> Conococheague Maryland
- Clarkston Utah -> Milo Missouri
- Clarkston Utah -> Stockton Utah
- Clarkston Utah -> Trementina New Mexico
- Clarkston Utah -> Waverly Georgia
- Clarksville -> Centerville Georgia
- Clarksville Arkansas -> Elk City Idaho
- Clarksville Florida -> Oakley Michigan
- Clarksville Illinois -> Angwin California
- Clarksville Illinois -> Kimball West Virginia
- Clarksville Illinois -> Robert Lee Texas
- Clarksville Iowa -> Custar Ohio
- Clarksville Iowa -> Dennison Illinois
- Clarksville Iowa -> Sharps Virginia
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