Users' routes
- •District Heights - Brandywine
- •De Soto - Beverly Hills
- •Detroit - Ann Arbor
- •Draper - Torrey
- •Denver - Longmont
- •Depew - Niagara Falls
- •Dallas - San Marcos
- •Davenport - Bonifay
- •Detroit Lakes - Thief River Falls
- •Deal - Slough
- •Deal - Robertsbridge
- •Davison - Ferndale
- •Duluth - Columbia
- •Dodgeville - Leesville
- •Dodgeville - Milwaukee
- •Dodgeville - Madison
- •Dallas - Miami
- •Dixon - Galena
- •Dexter - Paducah
- •Dallas - Austin
- •Deadwood - Vail
- •Dallas - New York
- •Decatur - Phoenix
- •Datil - Glenwood Springs
- •Denali National Park and Preserve - Anchorage
- •Des Moines - Davenport
- •Dhaka - Howrah
- •Davie - Sanford
- •District Heights - Cheverly
- •Dumont - Milford
- •Destin - Johnson City
- •Dubuque - Iowa Falls
- •Depoe Bay - Marysville
- •Denver - Galt
- •Darlington - Platteville
- •Dover - Tampa
- •Decatur - Pittsburgh
- •Decatur - Pittsburg
- •Dallas - Longview
- •Dandridge - Dunwoody
- •Denver - Lawrence
- •Dothan - Converse
- •Deer Park - Sault Ste. Marie
- •Dallas - Jefferson
- •Dalhart - Fort Worth
- •Dyersburg - Buena Vista
- •Dubuque - Delafield
- •Dubuque - Eau Claire
- •Dubuque - Janesville
- •Dubuque - Kenosha
- •Dubuque - Greenfield
- •Dubuque - Green Bay
- •Dubuque - Germantown
- •Dubuque - Lake Geneva
- •Dubuque - Manitowoc
- •Dubuque - Oak Creek
- •Dubuque - Plover
- •Denison - Phoenix
- •Duluth - Hinckley
- •Dallas - DFW Airport
- •Dublin - Rentz
- •Discovery Bay - Bremerton
- •Dowell - Northfield
- •Deerfield Beach - West Palm Beach
- •Delhi - Mississauga
- •DeLand - Chimney Rock
- •Denver - Cheyenne
- •Denton - Oklahoma City
- •Detroit - Youngstown
- •Dickinson - Redmond
- •Daytona Beach - Jacksonville
- •Daytona Beach - Orlando
- •Daytona Beach - Tampa
- •Denton - Plymouth
- •Destin - East Alton
- •Dobbs Ferry - Binghamton
- •Detroit - Taylor
- •Destin - Orlando
- •Dallas - Coleman
- •Drummonds - St. Louis
- •Duluth - Wheaton
- •Decatur - Duluth
- •Douglas - Branson
- •Dripping Springs - Galva
- •Doraville - Southaven
- •Doraville - Kennesaw
- •DeKalb - Plainfield
- •Duluth - Abbeville
- •Doraville - Rex
- •Doraville - Norcross
- •Detroit - Livonia
- •Dunkirk - Waldorf
- •Dacula - Cumming
- •Daytona Beach - Port Orange
- •Dobson - Stuart
- •Daleville - Mattituck
- •Danbury - Windsor Locks
- •Daytona Beach - Sanford
- •Danville - East Peoria
- •Detroit - White Lake
