US Geological Survey Topo Maps

Free Access to All Maps 
  • US Geological Survey 24K scale topo maps are high-resolution detailed maps, each showing an area of approximately 7 by 8.5 miles. Zoom in to see details as small as 8 feet across while hiking, biking, skiing, snowshoeing, etc.
  • 100K scale topo maps show a larger area of approximately 50 by 34 miles, perfect for showing all of a multi-day trail.
  • 250K scale topo maps show the largest area of approximately 100 by 68 miles, giving an overview that is great while planning, driving or flying.
  • One-time purchase of iHikeGPS includes forever- free download access of all topo maps directly to your iPhone, iPad or iPod touch anywhere and anytime you have a Wi-Fi or Cell connection.
  • Store up to 750 maps at a time on your mobile device. Use in the wilderness anytime.
  • Choose from 53,750 USGS maps covering the United States including all 50 states, Puerto Rico, the US Virgin Islands, and Guam.

USGS Raster Maps: The Gold Standard of Topographic Maps for the USA!

A United States Geological Survey (USGS) 24K Raster map of Winter Park, CO.
This high contrast image is very readable in bright sunlight.
You have the information you need in iHikeGPS.

See the difference between 24K, 100K and 250K Maps.

24K USGS Map

This is from a 24K USGS map which covers approximately 7 miles x 8.5 miles per map.

100K USGS Map

This is from a 100K USGS map, which covers approximately 50 miles x 34 miles per map, with the 24K area highlighted in red.

250K USGS Map

This is from a 250K USGS map, which covers approximately 100 miles x 70 miles per map, with the 100K area highlighted in purple and the 24K area highlighted in red.

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