Very nice and completely routable maps based on OSM data by Lambertus
OSM map focused on MTB and hiking of South Africa
Raumbezug's OSM map of Denmark
Amazing road and topo maps of Malaysia
Routable OSM map of Brazil by 'avila'
This is a collection of nice topographic maps from Afghanistan. They feature roads, rivers, settlements, POIs and contour lines. They also provide english transliteration of the names.