National Geographic now publishes a total of four Trails Illustrated Maps for Glacier National Park. The original map (map 215) encompasses both Glacier and Waterton Lakes National Park in Canada.
For much greater detail, National Geographic also publishes three sectional maps: Many Glacier, Two Medicine and North Fork. The original map has a scale 1:100,000, however, the three new sectional maps have a scale of 1:50,000, and provide much greater detail such as backcountry campsite locations, footbridges, fords/stream crossings, points-of-interests, shuttle stops, nature/interpretive trails, as well as water and snow hazard locations.
Many Glacier Sectional Map:
The Many Glacier Map (map 314) includes: the Many Glacier area, Cracker Lake, Waterton Lakes National Park, Goat Haunt, Belly River, Upper Kintla Lake, Continental Divide Trail, Pacific Northwest Trail, and more.
North Fork Sectional Map:
The North Fork Map (map 313) includes: Lake McDonald, Apgar, Avalanche Basin, Sperry Chalet, Kintla Lake, Bowman Lake, Waterton Lake, Flathead River, Pacific Northwest Trail, National Park Headquarters, and more.
Two Medicine Sectional Map:The Two Medicine Map (map 315) includes: Cobalt Lake, Dawson Pass, Logan Pass, Piegan Pass, St. Mary Lake, The Loop, Cut Bank, and more.
If you're looking to purchase all three sectional maps you're much better off purchasing the three-map bundle pack, which provides a fairly steep discount.
The Nat Geo maps provide far more information and detail than the official national park map. Additionally, all Trails Illustrated Maps are waterproof and tear-resistant.
Hiking in Glacier National Park