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Maps for Garmin based on OpenStreetMap

Urban map

Frequently Asked Questions

  1. Is it possible to install several maps on the GPS at the same time?
  2. Are the maps compatible with my Garmin model?
  3. Can the maps be used in a GPS of another brand?
  4. What is the map scale?
  5. I have searched for something placed in an area I will travel soon, but device didn't find anything. Will it work when I'm there?
  6. What is the difference between map types (OSM base map, topographic, trucks and map with DEM)?
  7. When I try to open the file I downloaded, Windows says image file is corrupted or it is not an image file.
  1. Is it possible to install several maps on the GPS at the same time?

    Yes, it is possible. How to do it depends on your GPS model. There are models which are able to read the maps only if the file containing them is called gmapsupp.img and models which can read the maps with other names. For the latter you just have to change the name to whatever you want, keeping *.img extension. For example. country1.img, country2.img, etc. The way to know if your device reads maps with a name other than gmapsupp.img is simple, just try changing the name and see if it recognizes it or not.

    For those which only admit maps called gmapsupp.img you have to do the following: download and install MapSource/BaseCamp version of the map you are interested in. Once done, from within MapSource or BaseCamp (using MapInstall utility) select the maps you want to have in your device and send them to you GPS in a single step. This way a unique gmapsupp.img file will be created with all selected countries. Note that maps installed this way are not connected to each other, so you'll not be able to calculate routes from one country to a contiguous one.

  2. Are the maps compatible with my Garmin model?

    Up to date, maps are compatible with all Garmin GPS models.

  3. Can the maps be used in a GPS of another brand?

    No. Each manufacturer uses it's own map format and they are not compatible with each other.

  4. >What is the map scale?

    Unlike paper maps, these maps don't have a fixed scale. You can zoom in and out on your computer or on the GPS, so that scale varies. Current scale is usually displayed at some corner of your screen.

  5. I have searched for something placed in an area I will travel soon, but device didn't find anything. Will it work when I'm there?

    If you search for something too far away (hundreds of km) from where device located satellites last time, it is normal it doesn't find anything. You have to simulate you are in a place nearer the place you are making your search. The way to do it varies among models. On some models, if you center map screen on the place you are interested in and then make a long touch on your device screen, an option to fix position in that place pops up. On other models it may be a Menu button option.

  6. What is the difference between map types (OSM base map, topographic, trucks and map with DEM)?

    If you place mouse over map type name at downloads page you'll see a short description of each type. They are described in more detail below:

    • OSM Base Map: Map for general use. It contains roads, streets, tracks, paths and POI among other elements. Most appropriate for nüvi series satnavs.
    • Topographic map: It contains the same information than base map plus contour lines, which will give you information about terrain height and steepness. Suitable for outdoor activities, such as hicking, mountaineering, etc. Contour lines can be activated or deactivated as needed.
    • Map for Trucks: Map specially designed to be used in trucks, as it considers weight, height, etc. restrictions affecting these vehicles when calculating routes. Elements without importance for these vehicles have been removed from the map, to make it clearer. +Info
    • Base map with DEM: Map is rendered over a Digital Elevation Model, which enables showing hill shading, calculate route profiles and show 3D maps. +Info

  7. When I try to open the file I downloaded, Windows says image file is corrupted or it is not an image file.

    It's a Windows problem. The file containing the map has .img extension and Windows thinks it is an image file, but it is not the case. It is a Garmin img format file. This file is not to be opened as other files in your computer, but to be copied to your GPS.

You can leave your comments on this page below:

Comments (31)

Topic: Questions
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BobP (Reading, UK)
Downloaded the British Isles map and unzipped it but on trying to run the .exe nothing happened, didn’t seem to run. My machine is Windows 11 latest build. My PC is working just fine and all of my other programs run OK. Any idea what the problem is ?. Should I run it direct from the command prompt ?. I just double clicked the exe, but also tried Open - both appeared to do nothing at all.
24th October 2023 1:49pm
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Rolf (Germany)
Hi all,

has anybody ever managed to use these maps with the old Garmin nRoute?

Best regards,
Rolf
23rd June 2023 1:58pm
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KMG (South Korea)
Hello.
Can i use this data for OSRM Engine?
I want operate OSRM + OSM + Truck based Route Engine.
Admin:
I don't know anything about OSRM and I'm not sure if you ask if is it technically possible or if is there any objection from my side but, anyway, isn't it easier to use directly OSM data?
6th December 2022 3:26am
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Geovane (Brazil)
Preciso do mapa para meu dispositivo igpsport igs630. Os mapas disponíveis no site são baseados no Openstreetmap, porém a extensão do arquivo é ".map". Os mapas baixados para os dispositivos garmin são ".img". Eu consigo converter os arquivos para serem utilizados em meu GPS igs630 da marca igpsport?
2nd July 2022 5:38am
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David (Ireland)
Hello
I downloaded BaseMap of Iberia for MS/BC.
After extraction and running .exe I expected to find a folder with a couple of dozen .img files as usual
Instead I have a variety of files including a large .mdr and no maps appearing in MS or BC.
What have I done wrong?
Going to try it now with the download for the Garmin receiver but I really want it on the PC.
Thanks
Admin:
There has been a problem with some Topo and DEM maps for PC generation. Please wait for the next update. FIles for GPS are correct.
24th September 2021 11:59pm
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