SW Alberta & SE British Columbia Regional Map - Gem Trek. The sixth edition of this popular 1:500,000 scale map covers Edmonton and Calgary, south to the U.S. border, and west as far as Jasper National Park in the north and Castlegar, in the B.C. Kootenays in the south. All the major highways are shown, as well as national and provincial parks and wilderness areas. The map also shows lesser-known back roads, and pinpoints the location of lodges, campgrounds and hot springs. Mileage charts on the front and back provide distances between major towns and cities.