Make sure your software is up todate. You can check at: Garmin WebUpdater.
Includes full coverage of the United States, including Alaska, Hawaii and Puerto Rico.
The TOPO U.S. 100K full coverage data card includes the same great features and mapping data as our 11 regionalized data cards. It contains interactive views of detailed topographic maps and land elevation contours with elevation shading on compatible units. It is vector-based and contains descriptive details for features typically found in topographic maps, such as terrain contours, topo elevations, summits, parks, coastlines, rivers, lakes and geographical points. With TOPOU.S. 100K, you can have topographic detail wherever your journey takes you. Just plug the data card into your compatible unit and see the entire United States.
Pre-programmed microSD cards -- Their compact, small size makes it easy to pack light and add maps to your Garmin Alpha or Astro GPS or other compatible unit. Just plug these cards into your GPS, and you're ready for the great outdoors. Loaded with detail, including terrain contours, elevation information, trails, summits, rivers, lakes and some roads, these cards are perfect for your next outing!
- Provides detailed digital topographic maps, comparable to1:100,000 scale USGS maps, for the entire United States
- Contains summit locations with elevation, coastlines, lake and river shorelines, wetlands and perennial and seasonal streams
- Provides elevation profile on compatible Garmin devices so you can estimate terrain difficulty
- Contains many trails, rural roads, city neighborhood roads, major highways and interstates