How to use CalTopo & the Gaia GPS App to Plan your Backcountry Skiing Routes

Backcountry skiing and ski mountaineering has lots of levels. Beginner backcountry skiers typically start touring around in heavily traveled areas, typically on passes. Loveland Pass, Berthoud Pass, and Red Mountain Pass have probably been among your old stomping grounds if you started backcountry skiing in Colorado. First, you started following skin tracks and ski tracks on these heavily traveled areas. Then, you found some more novel skin tracks which you followed to see where they went, and found some fresh goodness along the way.

But your desire to explore continued to grow. So, you bought a guidebook and skied all the routes of interest in it. But then you wanted more. You wanted to go where there weren’t tracks to lead you to your destination. You wanted to go where no one you know has skied before.

Frank and I have been exploring new destinations in the backcountry for years, within Colorado, many of the US mountain states, and even Canada. The past two years we’ve found ourselves thrown into terrain that we are completely unfamiliar with more often than not, as we explored routes to write up in our soon-to-be-published guidebook (coming out in fall, 2017).

How do we do it? Well, there’s no doubt that our route planning has evolved as technology has evolved. Cell phones and the available apps associated with them have allowed for more more involved route planning than we’ve ever done before.

So, here it is. Here’s our methods and secrets to route planning for backcountry skiing in zones that we do not know!

Gaia GPS App

The Gaia GPS App is a game-changer. Now, you can have an app on your smart phone that works nearly 100 times better than any other GPS you’ve ever owned. The Gaia GPS App is $19.99 on Google Play and ITunes, but it’s worth every penny. Besides, it transfers from device to device as it is linked with your Google or ITunes account – so if you get a new phone, you don’t need to purchase the app again.

There are a lot of things that go into learning how to use the Gaia GPS App, and this isn’t a tutorial in how to use every feature on it… that would take months. But, I’ll give you a few of the basics.

Once you open the app, you’ll get a map. If the map doesn’t go to your location, then click on the circular icon at the top.
Using Gaia GPS App for backcountry skiing

You can also search for places if you wish to review a place that is far from your current location.
Using Gaia GPS App for backcountry skiing

To begin recording your track, simply press the Record button on the bottom left of the screen, shown in the picture above.

The app is full of different base map choices. These are some that are available:
Using Gaia GPS App for backcountry skiing

If you upgrade to the Gaia GPS Pro, you have additional layer capabilities (layers you can put on top of the base map) as well as a host of other features.
Using Gaia GPS App for backcountry skiing

I am particularly fond of the slope shading layer, which tells you how steep a slope is – a huge asset when traveling in avalanche terrain. The slope shading layer is very similar to that used by CalTopo, further explained below. On Gaia GPS, the slope shading is available as a base map for the regular version, but this is diffcult to use as it makes little sense without the topographic features. With Gaia GPS Pro, the slope shading can be added as an overlay on to the base map.

Using Gaia GPS App for backcountry skiing
A regular topographic base map on the left, and one with a slope shading overlay on the right.

A Pro membership is $5.99/month or $39.99/year. Most backcountry skiers will do well with the monthly membership as you may not use these features in the summer.

Can I use the Gaia GPS app in areas without internet or cell service?
The answer is yes. But it’s best to download the maps you need in advance, and using the search feature mentioned above is best for this. To download the map, click on the layer icon in the upper right of the screen, and then scroll all the way to the bottom to “Download Map”.
Using Gaia GPS App for backcountry skiing

A box will appear on the screen which will allow you to select the area which you wish to download. It’s best to zoom out quite a bit so you get more area. Remember, you can always zoom in more when using the actual map. Once your region has been selected, press Save and follow the prompts. You can even give the map a specific name.
Using Gaia GPS App for backcountry skiing

You can use your GPS app as it is, and plan as you go. But, it is often better to plan your general routes in advance. You can also plan your route using the Gaia GPS App, but I have found it slightly difficult to deal with – largely because I find it better to have a larger screen to allow for a better view for planning. My preference is to plan routes on CalTopo or Google Earth, and then import them to the Gaia GPS App.

Why is it better to Plan your Backcountry Skiing Routes in Advance?

There are probably dozens of reasons why it’s better to plan your routes in advance, but here’s a few things to get you thinking. First, using the slope shading layers can help you choose routes that minimize your exposure to avalanche terrain. Second, knowing your anticipated distance and elevation gain can help you have a better sense of the time needed for your tour – which is especially essential in spring when wet slides are a very real possibility. Third, it can make you more efficient as you will likely do less route finding along the way.

We also recommend having more than one plan in mind – back-up options for if your day or the snow conditions were not as you had hoped. Planning back-up options means you’ll be more likely to defer to them when needed.

Keep in mind that your route may not go exactly as planned. You may encounter denser trees than you expect, or cliff areas that do not show on the topo map, or rocky terrain. You will often have to do some route-finding along the way, but creating a route in advance allows you to have a guideline to follow.

Planning Routes Using CalTopo

CalTopo is not an app. It is an online tool mapping tool that is best used on a desktop. Maps can be accessed on a mobile smart phone by using a simple web browser. But, you’ll find that many of the features are not accessible on mobile devices.

Gaia and CalTopo really work hand in hand. Just like Gaia has layer capabilities, so does CalTopo. Using CalTopo will help you use Gaia and vice versa.

To start, you’ll want to search for your desired location. Unlike Gaia, mountains are typically not searchable. You may find it best to search for the closest town and then scroll north, south, east or west on the map accordingly to get to your place you wish to research.
Using CalTopo with Gaia GPS App for backcountry skiing

When route planning you may want to look at some of the other layer capabilities. You can access these layers by hovering your mouse over the “MapBuilder Topo” in the upper right of your screen. When planning a route for backcountry skiing, I am a fan of the slope shading layer. Notice that the color corresponds to a range of slope angles – a very useful tool when you are planning for travel in avalanche terrain.
Using CalTopo with Gaia GPS App for backcountry skiing

Many other map layers can be viewed as well and you may find them useful from time to time. Access these by clicking on “Stack New Layer” under “Additional Map Layers”. If you do not see the layer possibilities, try clicking on the empty field box with the down arrow shown in the photo. You can even choose a percentage for the opacity of the layers.
Using CalTopo with Gaia GPS App for backcountry skiing

One of the simplest ways to plan your route is to simply start drawing a track as described in this image.
Using CalTopo with Gaia GPS App for backcountry skiing

A pop up box will appear asking you to name your track. Name it if desired, and then choose your line style. If you do not choose, it will use a default. Click “Okay” to begin drawing your track.

Use the mouse to draw your track, clicking on various points to break up the segment.
Using CalTopo with Gaia GPS App for backcountry skiing

Once you have your track drawn, you can view essential information like distance and elevation gain by clicking on the Graph Icon next to the name of your route.
Using CalTopo with Gaia GPS App for backcountry skiing

There are many features to CalTopo that I have not described – some are intuitive, others are not. If you have questions, you’ll find help documentation if you hover your mouse over the words “CalTopo” in the upper left of your screen.

Last, you’ll want to export your track for use in Gaia. It’s usually best to save it as a GPX file.
Using CalTopo with Gaia GPS App for backcountry skiing

Planning Routes Using Google Earth

Sometimes you may find it easier to plan routes using Google Earth. Certain features, like couloirs, are often easier to discern on Google Earth rather than a topo program like CalTopo or Gaia GPS.

Additionally, you can adjust the season in Google Earth (using the historical imagery icon and toggle) to better foresee how snow will be impacting your desired location.

To create a track on Google Earth, use the Add Path tool. Similar to CalTopo, you’ll have the option to name it and change the color. Use the mouse to move and click to draw your route.
Using Google Earth for backcountry skiing.

Also similar to CalTopo, you can view an elevation profile with distance. Simply right click on the name of your route on the left side of the screen (not shown in photo), and then choose “Show Elevation Profile”.
Using Google Earth to plan backcountry skiing routes

Once you are done creating your route, you will need to save it to your computer. To do this, click “File” in the upper right of the screen, and then select “Save Place As”. Save the track as either a GPX or KML file as Gaia GPS and CalTopo accept either one (CalTopo also accepts KMZ).

You may wish to import your file to CalTopo for further review or additions. For example, you may find it nicer to use Google Earth to mark a couloir, but better to use CalTopo to plan the approach.

Importing Routes to Gaia GPS

After you download your tracks to your computer, you will need to import them into Gaia GPS. The app will read either GPX or KML files. First, you need to figure out a way to transfer the files from your computer to your phone. You can use email, Bluetooth, cloud storage like Dropbox or Google Drive, plug your phone into your computer, or many other different methods. I prefer email for this purpose as it is very easy to transfer files.

Once a GPX file or KML file is on your mobile phone, find the location of it and click on it to open. Your phone should give you suggested apps, like shown below.
Using Gaia GPS app for backcountry skiing.

You’ll want to choose the Gaia GPS App, shown on the left of the image above.

Likely, the Gaia GPS app with open and the imported track should already be there. However, you may not see it on the map. You need to make sure the location of your map is the same location as the track – so you may need to adjust the location by using the search box mentioned above. Alternatively, you can click on the menu bar at the upper left of the app, select “Routes”, choose your desired imported track, and then select “Show on Map”.

A Word to the Wise

Learning new technology takes practice and patience. Every program, every app, every electronic device has its quirks. Don’t plan your first route for a 14 hour day and think that all will go smoothly. Practice on shorter routes and maybe in places where you are more familiar with the terrain. Learn how to read the maps and use them as tools in your planning. Build up to longer days and more challenging terrain as your planning skills grow. Last, remember that you are working with a mobile device – in the cold. Know how your battery reacts to these situations and bring backup batteries or charging options if you think you will need them!

Have fun exploring more!

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How to use CalTopo & the Gaia GPS App to Plan your Backcountry Skiing Routes
Article Name
How to use CalTopo & the Gaia GPS App to Plan your Backcountry Skiing Routes
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Want to explore more? Don't be afraid! Learn the tricks to using Gaia GPS and CalTopo to plan your backcountry skiing routes!
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Brittany Walker Konsella

Aside from skiing, biking, and all outdoorsy things,Brittany Walker Konsella also loves smiles and chocolate 🙂 Even though she excels at higher level math and chemistry, she still confuses left from right. Find out more about Brittany!

Latest posts by Brittany Walker Konsella (see all)

Brittany Walker Konsella

Aside from skiing, biking, and all outdoorsy things, Brittany Walker Konsella also loves smiles and chocolate :) Even though she excels at higher level math and chemistry, she still confuses left from right. Find out more about Brittany!

4 thoughts on “How to use CalTopo & the Gaia GPS App to Plan your Backcountry Skiing Routes

  • February 8, 2017 at 1:39 pm
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    Nice, I do the exact same things before every trip. I use Google Earth and CalTopo for planning, Backcountry Navigator for following routes on the mountain and Geo Tracker for recording my tracks. And bring 2 charged batteries as backup! haha…Great article!

  • February 8, 2017 at 3:24 pm
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    Thanks Braden! Sounds like you are well-prepared for your adventures!

  • March 1, 2017 at 9:01 am
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    I just bought Backcountry Navigator based on numerous positive recommendations on TGR, now wondering if I should have purchased Gaia. Have you done any comparisons of the two?

  • March 1, 2017 at 7:15 pm
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    Hi Danno! I have really only used Gaia, so I can’t say that I have a good comparison for Backcountry Navigator. It’s my understanding that Gaia has more maps, better maps, and more layers, especially when comparing the Pro versions. But, I don’t know that for 100% sure. It seems both work quite comparably. I have been happy with Gaia and find it reliable and extremely useful, so I haven’t bothered shopping around.

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