Openfietsmap - OFM with DEM (shadow relief) A mkgmap developer has created a tool to put DEM data in the Garmin maps! See http://www.mkgmap.org.uk/pipermail/mkgmap-dev/2017q4/027168.html for more info. This is still experimental with
How to install bike maps on the Garmin Edge 520 - OneManEngine
Free Garmin maps for your GPS: where and how to get them - Life in Travel
Garmin.openstreetmap.nl has been down for weeks its seems - Equipment - TrainerRoad
How to: Install Free Maps on your Garmin Edge | DC Rainmaker
Free Maps vs Paid - Pros and Cons - How do I...? - Geocaching Forums
Openfietsmap
Garmin.openstreetmap.nl has been down for weeks its seems - Equipment - TrainerRoad
How to install bike maps on the Garmin Edge 520 - OneManEngine
Openmtbmap.org - Mountainbike and Hiking Maps based on Openstreetmap
How To Put 100% Free GPS Maps On Your Garmin - CyclingAbout.