Garmin mapping units come with built-in, permanent basemaps that cannot be altered. These basemaps come in a variety of global designations (i.e., Atlantic basemap). Factory-installed basemaps cannot be altered. 

The Americas Recreational Routable Basemap v2 includes the United States, Canada, Mexico, and Central and South America, and covers an area from W180 to W30 Longitude, S60 to N75 Latitude. Includes a high-level worldwide map with borders and major cities.

Standard map coverage includes 

1. Oceans, rivers, and lakes (greater than 30 sq. miles) 
2. Principal cities and some smaller cities and towns 
3. Major interstates and principal highways 
4. Political boundaries (state and international borders) 
5. Major Airports 

1. Lakes greater than 5 square miles 
2. A database of exits for the Federal Interstate highway system. This includes many businesses within about 1/4 mile of the exit, including: restaurants, diesel/gas, hotels/lodging, overnight RV parking, dumps, campgrounds, truckstops, medical facilities, shopping and outlet malls, ATMs, and many more attractions. 

1. Lakes greater than 5 square miles (Southern Canada) 
2. Lakes greater than 10 square miles (Central - Northern Canada) 

1. Standard Map Coverage