Underwater Programming Laboratories



OSM trails are trail map overlays to see trails on top of maps that do not have trails, or do not have trails in areas you are interested in. They are extracted from data provided by OpenStreetMap.
These maps are provided "as is". Please consult the Map Terms for more information.

United States
RegionSizeDateDownload
Alabama0.97 MB2025-03-21OSM Trails Alabama.zip
Alaska0.98 MB2025-03-21OSM Trails Alaska.zip
Arizona3.40 MB2025-03-21OSM Trails Arizona.zip
Arkansas0.78 MB2025-03-21OSM Trails Arkansas.zip
California12.57 MB2025-03-21OSM Trails California.zip
Colorado5.73 MB2025-03-21OSM Trails Colorado.zip
Connecticut1.86 MB2025-03-21OSM Trails Connecticut.zip
Delaware0.26 MB2025-03-21OSM Trails Delaware.zip
District of Columbia0.29 MB2025-03-21OSM Trails District of Columbia.zip
Florida4.51 MB2025-03-21OSM Trails Florida.zip
Georgia1.93 MB2025-03-21OSM Trails Georgia.zip
Hawaii0.33 MB2025-03-21OSM Trails Hawaii.zip
Idaho1.75 MB2025-03-21OSM Trails Idaho.zip
Illinois3.62 MB2025-03-21OSM Trails Illinois.zip
Indiana1.87 MB2025-03-21OSM Trails Indiana.zip
Iowa1.44 MB2025-03-21OSM Trails Iowa.zip
Kansas0.85 MB2025-03-21OSM Trails Kansas.zip
Kentucky0.97 MB2025-03-21OSM Trails Kentucky.zip
Louisiana0.43 MB2025-03-21OSM Trails Louisiana.zip
Maine1.16 MB2025-03-21OSM Trails Maine.zip
Maryland2.09 MB2025-03-21OSM Trails Maryland.zip
Massachusetts3.79 MB2025-03-21OSM Trails Massachusetts.zip
Michigan4.63 MB2025-03-21OSM Trails Michigan.zip
Minnesota2.96 MB2025-03-21OSM Trails Minnesota.zip
Mississippi0.38 MB2025-03-21OSM Trails Mississippi.zip
Missouri1.62 MB2025-03-21OSM Trails Missouri.zip
Montana1.45 MB2025-03-21OSM Trails Montana.zip
Nebraska0.89 MB2025-03-21OSM Trails Nebraska.zip
Nevada1.36 MB2025-03-21OSM Trails Nevada.zip
New Hampshire1.34 MB2025-03-21OSM Trails New Hampshire.zip
New Jersey2.17 MB2025-03-21OSM Trails New Jersey.zip
New Mexico1.55 MB2025-03-21OSM Trails New Mexico.zip
New York5.09 MB2025-03-21OSM Trails New York.zip
North Carolina2.75 MB2025-03-21OSM Trails North Carolina.zip
North Dakota0.40 MB2025-03-21OSM Trails North Dakota.zip
Ohio3.46 MB2025-03-21OSM Trails Ohio.zip
Oklahoma0.66 MB2025-03-21OSM Trails Oklahoma.zip
Oregon2.87 MB2025-03-21OSM Trails Oregon.zip
Pennsylvania4.01 MB2025-03-21OSM Trails Pennsylvania.zip
Puerto Rico0.22 MB2025-03-21OSM Trails Puerto Rico.zip
Rhode Island0.40 MB2025-03-21OSM Trails Rhode Island.zip
South Carolina1.01 MB2025-03-21OSM Trails South Carolina.zip
South Dakota0.38 MB2025-03-21OSM Trails South Dakota.zip
Tennessee1.78 MB2025-03-21OSM Trails Tennessee.zip
Texas5.37 MB2025-03-21OSM Trails Texas.zip
Utah2.89 MB2025-03-21OSM Trails Utah.zip
Vermont0.74 MB2025-03-21OSM Trails Vermont.zip
Virginia3.16 MB2025-03-21OSM Trails Virginia.zip
Washington4.77 MB2025-03-21OSM Trails Washington.zip
West Virginia0.62 MB2025-03-21OSM Trails West Virginia.zip
Wisconsin2.69 MB2025-03-21OSM Trails Wisconsin.zip
Wyoming1.29 MB2025-03-21OSM Trails Wyoming.zip

Map Installation

  1. After downloading the map, open the ZIP file and you will find a file with the name of the region that will end with ".img". This is the file you will copy to your GPS or SD card, not the file ending with ".zip"
  2. Connect your GPS to your computer, insert the SD card from your GPS into your computer if you can, or insert the SD card into an SD card reader, and then connect the SD card reader to your computer.
  3. Open Windows Explorer and select your GPS or the SD card.
  4. Open the folder with the name Garmin.
  5. Copy the file with the ".img" at the end that was in the ZIP file from your computer to the Garmin folder on your GPS or SD card.
  6. Disconnect your GPS or remove the SD from your computer or SD card reader and insert the SD card into your GPS.
  7. Power on your GPS.
  8. If the map is not visible or the trails are not visible, check your map setting to make sure the map is enabled.

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