Installing OpenStreetMap on Your Garmin Edge Cycling Computer for Traveling to Japan

Installing OpenStreetMap on Your Garmin Edge Cycling Computer for Traveling to Japan

Garmin Edge cycling computers are invaluable tools for many cyclists, providing navigation and tracking features. While Garmin offers its base maps installed on your device, many people will need to install additional maps if they are traveling. The most convenient way to do this is to use OpenStreetMap (OSM). OSM provides free, regularly updated, community-driven maps. Here’s a step-by-step guide on how to install OSM maps onto your Garmin Edge device.

Note: If you have a device made by Wahoo (Elemnt Bolt/Roam Series) or Hammerhead (Karoo Series) they will have their own specific way to install maps that is within their app/device.

TL:DR Download Link for Japan OSM Maps

Click here to download the map files, then jump ahead to the Step-by-Step guide below to install the files.

Why OpenStreetMap?

  1. Free: OSM maps are free, saving you the expense of purchasing proprietary maps.
  2. Community-driven: OSM relies on community contributions, ensuring frequent updates and an ever-expanding database.
  3. Highly detailed: The maps can be incredibly detailed, with community additions ranging from roads to bike trails.

Getting Started: Prerequisites

  • A Garmin Edge cycling computer.
  • A microSD card (if your device lacks adequate internal memory, mostly devices from before 2018).
  • A computer with internet access.
  • A USB cable for your Garmin device.

Step-by-Step Guide

1. Download the OpenStreetMap for Garmin:

  • Click here to download a ready to go zip file for all of Japan (last updated 2022).
  • For all other countries follow the below.
    • Locate the section for Garmin-compatible maps.
    • Select the desired region or country.
    • Download the map file, which will typically be in .img format.

2. Prepare Your microSD Card (if using):

  • Insert the microSD card into your computer.
  • Create a new folder on the card and name it “Garmin.”

3. Transfer the OSM Map:

  • Connect your Garmin Edge to the computer via the USB cable.
  • If not using a microSD card, the Garmin device will appear as an accessible drive on your computer.
  • Move the downloaded .img map file into the “Garmin” directory on your device or on the microSD card.

4. Safely Disconnect:

  • Always eject your Garmin device properly from the computer before disconnecting to prevent potential data corruption.

5. Activate OpenStreetMap on Your Garmin Edge:

  • Power on your Garmin Edge device.
  • Navigate to the map settings or related map menu.
  • Your new OSM map should be listed among the map options.
  • Select and activate the new map. Remember to deactivate any conflicting maps to prevent issues.


  • Storage: If you find that the map file is too large for your device’s internal memory, a microSD card can offer additional storage space. You might have to delete other maps if your device is too full.


With OpenStreetMap, Garmin Edge users can access a wealth of free, detailed, and community-driven mapping data. The installation process is straightforward, and the benefits, especially for avid cyclists, are numerous. Happy cycling!

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