For Garmin Colorado/Oregon/Dakota/62/78 series GPS units, check out the G-Raster program.
Moagu maps have been tested and shown to work well on Garmin units in the 60C(S)x and 76C(S)x family. These include:
Though I haven’t seen it personally, customers have bought and used Moagu with the etrex Legend HCx and eTrex Vista HCx, and say that it seems to perform well on these units. While owners of this model should still check out the demo version of Moagu to make sure they feel the same way, I’m adding both of these to the list of compatible units:
Moagu maps work with the older versions of the 60C and 76C series (60C, 60CS, 76C, 76CS), as long as they have the latest firmware installed; one independent field test suggests that initial draw times with these older units are slower than with newer models, but that once drawn, they will also keep up with your position even at mountain biking speeds.
Don’t own one of the above units? Own an automotive, marine or bicycle Garmin GPS? Or one of the new Colorado/Oregon models? The new Garmin Colorado/Oregon/Dakota models support raster imagery in the KMZ image overlay format. Click here for info on G-Raster, an inexpensive program that converts georeferenced raster imagery into a Garmin-compatible KMZ format. There’s also free utility called BMaP2MP that can convert raster maps into vector Garmin maps that should be compatible with these units. BMaP2MP is a command-line utility, and using it requires substantial technical knowledge. But Moagu has a graphical front-end for this utility that makes the process a lot easier. Download this file to install in MapSource a sample map created using BMaP2MP/Moagu, and try it out on your Garmin GPS unit. Here are two screenshots from a Garmin Oregon unit showing the sample map:
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HT to Michael Woessner for the screenshots.