Reviewed By: Murray Castle on 12/25/06
Used these in 2010 to navigate from Calgary to Antelope Wells. Must have them again for the 2013 ride (Suzuki 400). Maps provide excellent detail, are waterproof, tough and dependable. Teamed together with GPS (US topo series loaded), navigation proved easy, in spite of the involved route-finding sometimes necessary. Forest fires caused us to reroute - again the maps & GPS provided all the info we needed. The GDT covers a lot of empty country - all glorious but largely unpopulated so can't ask directions. All maps are important: Adventure Cycling Association GDT maps are indispensable.