As a demonstration of their altitude information service, the Topocoding API website has a Google Maps demo. Click on a location on Google Maps, and get a placemark with altitude information for that point:
Click multiple points to get a path, and you can then generate a terrain profile for that path:
It uses a combination of SRTM-90 data (roughly 90-meter resolution), and GTOPO30 (1-kilometer resolution) where other data is missing. All continents except Antarctica are included.
They’ve also created an XML Google MyMaps tool that you can add to your collection of MyMaps mapping functions; click on this link, and then click on the appropriate button to add it to your MyMaps collection.
Other posts in the Google Maps Tools series
- Coordinate Data From Google Maps
- Reverse Address Geocoding With Google Maps
- Converting Google Maps Search Results To GPX
- Coordinate, Elevation, Distance And More In Google Maps
- Google Maps "My Maps" Features
- Measuring Elevation, Distance And Area In Google Maps
- Creating GPS Routes In Google Maps
- Thematic Polygon Shapefile Display In Google Maps
- Using The Google Maps Interface To Display General Maps And Images
- Heat Mapping In Google Maps
- Elevation Profile In Google Maps
- Embed Google Maps "My Maps" On Your Web Page
- Customizing Google Maps Markers
- Two Fun Cartographic Google Maps Tools
- Simple Guide To Embedding Google Maps "My Maps" On Your Own Webpage
- Another Google Maps Geocoder/Reverse Geocoder
- Drawing Lines Between Points In Google Maps, Straight And Great Circle
- Convert A Google Maps Point To Multiple Text Geographic Formats
- Meet Your Friends Halfway
- Plotting Swivel Data In Google Maps
- Meet Your Friends Halfway II
- Geographic Midpoint Calculator
- GIS-Like Functionality In Google Maps With ZeeMaps
- Creating GPS Waypoints Online From The USGS Geographic Names Information System (GNIS)
- MapMyRide.com
- Exporting KML Data From Google Maps MyMaps To A GPS
- Advanced Tool For Embedding Google Maps MyMaps On Your Website
- Draw/Label On Google Maps, And Generate GPX/KML/Embeddable Maps
- Another Way To Create Embeddable Google Maps With KML Data
- Documenting A Journey With Maptales
- Plot A Coordinate Position On Different Map Pages
- Worldwide Reverse Geocoding With Google Maps
- Google Maps Shaded Relief Site Updates
- Digipoint 2: Export Of Google Maps Points In Multiple Formats, And Elevation Data
- Google Maps Line Tool Now Supports Distance Measurement
- Geographically-Linked Video With VeoGeo
- Recent Google Maps Tools
- Google Maps Mapplets From Zonums Software
- Maximize Google Maps With Google Maps Max
- Mapping Zip And Area Code Boundaries, And More
- Altitudes And Terrain Profiles In Google Maps
- “Friendly” URLs To Address Maps
- Quick Zip Code Information
- Simple Online Form For Creating An Embeddable Google Map
- Embed Synchronized Google/Microsoft Virtual Earth Maps On Your Website/Blog
- Worldwide Contour Lines In Google Maps’ Terrain View
- Plot Gazetteer Features In A Google Maps Interface
- Antipodes Map
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