Garmin Colorado 400t Handheld GPS Unit with U S Topographic Preloaded Maps
Garmin Colorado 400t Handheld GPS Unit with U S Topographic Preloaded Maps

This rugged, advanced handheld is packed with detailed topographic maps for all your hiking adventures not to mention 3-D map view, a high-sensitivity receiver, barometric altimeter, electronic compass, SD card slot, picture viewer and color display. Exchange tracks, waypoints, routes and geocaches wirelessly between similar units. Slim, lightweight and waterproof, Colorado is the perfect companion for all your outdoor pursuits.
Watch an interactive demo.
Share Wirelessly
With Colorado 300 you can share your waypoints, tracks, routes and geocaches wirelessly with other Colorado users. Now you can send your favorite hike to your buddy to enjoy or the location of a cache to find. Sharing data is easy. Just select “send” to transfer your information to other Colorado units.
Keep Your Fix
With its high-sensitivity, WAAS-enabled GPS receiver, Colorado 300 locates your position quickly and precisely and maintains its GPS location even in heavy cover and deep canyons. The advantage is clear — whether you’re in deep woods or just near tall buildings and trees, you can count on Colorado to help you find your way when you need it the most.
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Colorado’s preloaded U.S. topographic maps, 3-D map view and a built-in worldwide basemap with shaded relief give you all the tools for serious climbing or hiking. Map detail includes national, state and local parks and forests, along with terrain contours, elevation information, trails, rivers, lakes and points of interest.
Just in case you’re wondering how steep that hill really is, Colorado’s 3-D map view helps you visualize your surroundings — giving you a better perspective of the elevation. |
| Expand Your Horizons |
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The Colorado also accepts SD cards, so you can use Garmin preprogrammed SD cards to add maps that serve any and all of your outdoor activities on land or water. Just take your pick from a wide selection, including street maps, topographic maps, coastal charts or inland lake data. The card slot is located inside the waterproof battery compartment, so you don’t have to worry about getting it wet. |
| Rock on. Find Fun | ||
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Colorado’s innovative Rock `n Roller input wheel for easy one-handed operation and intuitive screen interface make it as easy to navigate the device as the outdoors.
Customize Colorado’s interface based on your favorite activity. Even show off photos of your excursions with its picture viewer. |
| Experience Paperless Geocaching |
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Colorado supports Geocaching.com GPX files for downloading geocaches and detail straight to your unit. You’ll have at-a-glance cache descriptions and details to aid in your search. |
| Get Your Bearings | ||
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Colorado has a built-in electronic compass that provides bearing information even while you’re standing still.
Its barometric altimeter tracks changes in pressure to pinpoint your precise altitude. View elevation data before you begin your ascent or descent. You can even use the altimeter to plot barometric pressure over time, which can help you keep an eye on changing weather conditions. |
User Ratings and Reviews
3 Stars Topo map trails.
The pre loaded topo map trails are not accurate, spicifically the Pacific Crest Trail in the southern Sierra Wilderness in southern California, in the Sierra Navada Mountains. Otherwise I love the unit.
3 Stars Great unit, bad battery situation.
I have a Garmin Vista. It goes 24 hours per battery set. This thing needs a set of batteries per day in the field. As you still need a paper map, I returned it.
4 Stars What to say that hasn’t been said…
I love this unit, it’s my first GPSu I’ve taken it snowshoeing and hiking, and forest road exploring, and saved some mountain bikers from a purgatory of unmarked forestry roads (they were already about 2 miles off course when we bumped into them and they didn’t even know it) and so far I can’t find a road in the city or in the hills that it doesn’t know about, with trail heads listed, I don’t have to say “I hope this is the right road” ever again, I use the word ROAD loosely.
The GPS status display is very informative, tracking on foot with good Sat coverage accuracy tends to hang out around 5-6 yards, In the car it’s usually around 10-15 yards, one thing to note is, turn it on before you start driving or while you’re at a stop, it doesn’t like to lock on while moving, but once it’s on and locked it will track at high speed just fine.
Battery life is as advertised! I’m using recargable NiMH and as long as I limit backlight usage I can easily get 12 hours out of one set.
The preloaded topo is fantastic! So much information and so many POI’s, parks,little dam’s, and peaks I’ve been past many times before without ever knowing. The city base map however is a tease, it has the streets listed so you can use it like a map and see where you are, but it doesn’t lock onto streets, it views them as a background, so without buying the city software, when you set a destination it makes a straight line from you to it, I guess this might work if you commute in a small aircraft though!
I’m very happy with the product, but for the price I think the city nav should have been included, that’s why I knocked off a star. On the other hand I can’t blame Garmin for their business model as everyone needs to make a living.
4 Stars Great performer but battery hungry
This is a great unit; very accurate and easy to use. Be prepared to spend a little while getting used to the menu layout as some items you might expect to appear under one menu appear under another menu entry. But apart from the small “learning curve” this is a very nice GPS unit. The roller-style control is very easy to use and the “tracks” feature is particularly well developed in this unit. The only real issue is that the battery life can be quite short. However, there are three tips which will help you get a good 14 to 15 hours of continuous use. First, don’t use the back-light unless absolutely necessary (fairly obvious, really). Second, select the auto record setting in the “tracks” function to “update least frequently”. This second expedient seems to double the battery life and the unit still seems to update every 5 seconds or so (how far can you walk in 5 seconds anyway??). Third, if you use nickel metal hydride batteries make sure they are REALLY fully charged. Don’t use a rapid charge cycle (charge instead over night using a standard charger) as this gets the batteries hot and the total charge is dramatically reduced. Without these measures, I could only get an hour or two of operation when I first received the unit. Not using the back light added another hour of use and minimizing the “tracks” update frequency added another 4 hours of use. Finally figuring out what was going on with my battery charger resulted in a good 14+ hours of continuous use.
5 Stars First One
This is my first handheld GPS device. I bought it to GeoCache. It works well and has many features I like. The only knock is that the learning curve (expecially how to use it with my computer) was longer that it needed to be if there was a better manual.

















