6 Best Used GPS Devices for Navigation

The trail dips into a steep-walled canyon, and the familiar blue dot on your phone’s map starts to stutter and freeze. A glance at your battery reveals a terrifying 15%, with hours of hiking still ahead. This is the moment every backcountry traveler dreads, and the exact reason a dedicated GPS unit remains an essential piece of safety gear.

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Why a Used GPS is a Smart, Reliable Backcountry Buy

Let’s be clear: your smartphone is an incredible navigation tool, until it isn’t. Poor satellite reception under dense tree cover, dead batteries in the cold, and screens that are useless in the rain are all common failure points. A dedicated GPS is built for one job—telling you where you are and where you’re going—and it does that job under conditions that would sideline a phone.

Buying a proven, older model on the used market is one of the smartest gear investments you can make. You get 90% of the core functionality of a brand-new device for a fraction of the cost. These units were built to be durable, and their simpler technology is often more reliable and less prone to buggy software updates. That money you save can go towards a better sleeping bag, more gas for the trip, or a celebratory pizza on the way home.

Garmin GPSMAP 64s: The Gold Standard for Durability

When you need a device that will absolutely, positively work in a blizzard while you’re wearing thick gloves, the GPSMAP 64s is your answer. Its physical button interface is a massive advantage in wet or freezing conditions where touchscreens become unresponsive and frustrating. This thing is built like a brick, and that’s a compliment.

The prominent quad helix antenna provides some of the best satellite reception you can get, locking on quickly and holding a signal in deep canyons or thick forests where other devices struggle. It runs on standard AA batteries, a critical feature for long expeditions. You can’t plug into a wall in the middle of a week-long trek, but you can always carry a few spare AAs. The trade-off is its size and weight; it’s a tool, not a toy.

Garmin eTrex 30x: Unbeatable Battery Life & Value

Imagine a GPS that can run for an entire weekend of heavy use on a single pair of lithium AA batteries. That’s the magic of the eTrex line. The 30x is a favorite among thru-hikers and backpackers for whom every ounce and every milliamp of power matters. It’s significantly smaller and lighter than its GPSMAP cousins but still delivers fantastic core performance.

The eTrex 30x features a color screen and the ability to load detailed topographic maps, making it a fully-featured navigator in a compact package. Its primary interface is a small joystick, which can take some getting used to and can be a bit finicky with gloves. However, for a simple, reliable, and incredibly efficient GPS that you can find for a bargain on the used market, its value is unmatched.

Garmin inReach Mini 1: Compact Safety & Navigation

Sometimes, your primary concern isn’t just knowing where you are, but ensuring someone else does too. The original inReach Mini revolutionized backcountry safety by packing a satellite messenger and a GPS into a device the size of a car key fob. It allows for two-way text messaging, location tracking, and, most importantly, an SOS button that connects you to a 24/7 emergency response center, all via the Iridium satellite network.

As a navigator, it’s more basic. The small screen is best for checking coordinates or following a pre-loaded breadcrumb trail. Its real power is unlocked when paired via Bluetooth to your smartphone and the Earthmate app, giving you a full mapping experience on a larger screen while using the Mini’s superior satellite connection. Remember, a monthly or annual subscription is required to use the communication features, so factor that into your budget.

DeLorme inReach Explorer+: A Pre-Garmin Powerhouse

Before Garmin acquired the inReach technology, DeLorme was the original innovator, and the Explorer+ is a testament to their legacy. These units are often available at a steep discount and remain incredibly capable. Think of it as a GPSMAP and an inReach communicator fused into one rugged, self-sufficient device.

Unlike the Mini, the Explorer+ is designed to be a standalone navigator. It has a larger screen, a more detailed on-device mapping display, and a built-in digital compass and barometric altimeter. It’s bulkier, for sure, but if you want a single piece of hardware for both robust navigation and two-way satellite communication without needing to pull out your phone, this pre-Garmin classic is a fantastic and powerful choice.

Garmin Oregon 600: A Rugged, User-Friendly Touchscreen

If you love the intuitive feel of a smartphone but need the toughness and reliability of a dedicated outdoor GPS, the Oregon series is your sweet spot. The Oregon 600 brought a bright, multi-touch display to the backcountry, making panning across maps and navigating menus a much faster and more familiar experience than clicking through with buttons.

The key is that this isn’t a phone screen; it’s a transflective display designed to be easily readable in direct, bright sunlight. While any touchscreen can be challenging in heavy rain, the Oregon is far more capable than a standard phone. It represents a great compromise for day hikers, geocachers, and weekend backpackers who prioritize a user-friendly interface but still demand backcountry-grade durability.

Suunto Ambit3 Peak: The Classic, Bombproof GPS Watch

For the trail runner, mountaineer, or fast-and-light adventurer, stopping to pull a device from a pocket is an interruption. The Suunto Ambit3 Peak puts essential navigation right on your wrist. This watch is legendary in the outdoor community for its phenomenal GPS accuracy and battery life that can last for weeks in watch mode or record multi-day adventures in GPS mode.

Its navigation is streamlined: you can follow pre-loaded routes as a breadcrumb trail or navigate to specific waypoints. You won’t get detailed topo maps, but you get at-a-glance directional guidance that is perfect for staying on track during high-exertion activities. It’s a bombproof tool that also tracks key metrics like altitude, barometric pressure, and distance, making it a powerful companion for mountain athletes.

Key Checks Before Buying a Second-Hand GPS Device

Finding a great deal is exciting, but a little due diligence goes a long way. Before you hand over your cash for a used GPS, run through this quick mental checklist to ensure you’re getting a reliable tool and not someone else’s problem. A few minutes of inspection can save you from major headaches on the trail.

Here are the non-negotiables to inspect:

• Battery Compartment: Open it up. Look for any signs of fuzzy, white, or green corrosion around the contacts. This is often a result of leaky batteries and can be a fatal flaw.
• Screen: Check for deep scratches that might obscure the map. Look at the screen from an angle to spot any "delamination," where the screen layers appear to be separating.
• Seals and Ports: Make sure the rubber gaskets around the battery compartment and any USB/data ports are present and in good condition. These are essential for water resistance.
• Satellite Acquisition: If possible, ask to power the device on outside with a clear view of the sky. It should find and lock onto satellites within a minute or two.
• For inReach Devices: This is critical. Confirm with the seller that the device has been deactivated from their account. A device still linked to an account cannot be activated by a new owner.

Ultimately, the goal is to have confidence in your ability to navigate, not to own the most expensive gadget. These proven, time-tested devices offer incredible reliability and value, freeing up your budget and mental energy for what truly matters. Pick the tool that fits your adventures, learn how to use it, and get outside.