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  • I've basically been doing this with an old phone and the Komoot app. Phone only lasts for 3.5hrs, though so even with a batery pack I'm not sure I'll get enough recharging opportunities to last the full 4 days... unless OSM drains the battery significantly less than the komoot app.

  • I'll get enough recharging opportunities to last the full 4 days... unless OSM drains the battery significantly less than the komoot app.

    Use OSMAND in dumb mode, i.e no turn by turn, just the route loaded onto the map,

    looks like this with your position shown relative to the track as the blue radar type thingy

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