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Garmin GPSMAP 66i


This item: Garmin GPSMAP 66i
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Rugged GPS handheld and inReach satellite communicator with Garmin TopoActive Europe mapping

  • Large 3″ sunlight-readable colour display for easy viewing
  • Trigger an interactive SOS to the GEOS 24/7 search and rescue monitoring center; two-way messaging via the 100% global Iridium® satellite network (satellite subscription required)
  • Preloaded Garmin TopoActive Europe mapping with direct-to-device BirdsEye Satellite Imagery downloads (no annual subscription); includes multiple Global Navigation Satellite Systems (GNSS) support and navigation sensors
  • Cellular connectivity lets you access Active Weather forecasts and Geocaching Live
  • Compatible with the Garmin Explore™ website and app to help you manage waypoints, routes, activities and collections, use tracks and review trip data from the field
  • Internal, rechargeable lithium battery provides up to 35 hours of battery life in 10-minute tracking mode; 200 hours in Expedition mode with 30-minute tracking intervals
  • Precise Garmin navigation meets global communication in the GPSMAP® 66i premium GPS handheld with inReach® satellite technology.

Built for Tough Treks

The sturdy, button-operated GPSMAP 66i features a large 3″ colour display you can see even in bright sunlight. If you’re out in the field for long stretches of time, you can turn on Expedition mode and get up to 200 hours of battery life while using inReach technology. In the default tracking mode, you get up to 35 hours of battery life, and your device will save your location every 10 minutes.

InReach Satellite Communication

Staying in touch is vital, even on less challenging trips. Using inReach technology (subscription required), this handheld lets you trigger an SOS to the GEOS 24/7 emergency response team for interactive support in an emergency. It also enables two-way messaging and LiveTrack location sharing via the 100% global Iridium satellite network, so you can stay in contact with loved ones, teammates, headquarters and more.

Navigate with Confidence

GPSMAP 66i is fitted with the best in Garmin navigation. Preloaded Garmin TopoActive Europe mapping provides detailed views of topographic elevations, summits, parks, coastlines, rivers, lakes and geographical points. Direct-to-device downloads of BirdsEye Satellite Imagery provide high-resolution photo-realistic views of your route, trailheads, clearings and more — without an annual subscription. Support for multi-GNSS combined with altimeter, barometer and compass navigation sensors lets you track and navigate in challenging environments.

Weather Anywhere

Wireless cellular connectivity lets you access Active Weather for up-to-date forecasts, including predictive maps for temperature, wind, precipitation and clouds — right on the handheld when connected to Garmin Connect Mobile.

Pair with Your Mobile Device

The free Garmin Explore mobile app lets you plan, review and sync data, including waypoints, routes, activities and collections. Review completed activities while still in the field, even when you’re off the grid. The app also lets you sync your GPSMAP 66i with your compatible mobile device so you can access unlimited maps, aerial imagery and U.S. NOAA charts. You can even use all of the inReach features on your paired mobile device. For easier messaging, you can access your phone’s contact list from the Garmin Explore app to connect with fewer keystrokes. Plan for future trips and review previous activities from the Garmin Explore website.

Additional information






With Topo Active maps, With TOPO Great Britain PRO 1:50k, With TOPO Great Britain PRO 1:25k, 1:50k and 1:250k


PHYSICAL DIMENSIONS 6.6 x 16.3 x 3.5 cm
DISPLAY SIZE 3.8 x 6.3 cm; 3″ diag (7.6 cm)
DISPLAY RESOLUTION 240 x 400 pixels
DISPLAY TYPE Transflective colour TFT
WEIGHT 241 g
BATTERY Rechargeable lithium-ion
BATTERY LIFE Up to 35 hours at 10-minute tracking; up to 200 hours at 30-minute tracking (power save mode)
INTERFACE High-speed USB and NMEA 0183 compatible

Maps & memory

PRELOADED MAPS Yes (topographic)
BASEMAP green tick
STORAGE AND POWER CAPACITY microSD™ card (not included)
TRACK LOG 20,000 points, 250 saved gpx tracks, 300 saved fit archives


COMPASS Yes (tilt-compensated 3-axis)

Outdoor recreation features


Garmin Connect™



  • Trigger an interactive SOS with 24/7 search and rescue monitoring center: Yes
  • Send and receive text messages to SMS and email: Yes
  • Send and receive messages with other inReach® users, exchange locations: Yes
  • Track and share location with friends and family on web-based MapShare® portal: Yes
  • Virtual keyboard for custom text messaging: Yes
  • Garmin Explore compatible: Yes
  • Garmin Connect IQ compatible: Yes
  • Wireless compatible: Yes (Wi-Fi®, BLUETOOTH® and ANT+®)
  • Map segments: 15,000
  • Active weather: Yes
  • Request weather forecasts for current location and planned destination: Yes
  • Smart Notifications: Yes
  • Live Tracking: Yes (with Garmin Explore)
  • BirdsEye direct to device: Yes (no annual subscription required)
  • MIL STD 810G ruggedness for thermal, shock and water performance
  • RINEX Logging: Yes


1. Does this unit come with batteries?

It has an internal, rechargeable lithium battery, so no need for batteries.

2. What are the service plans available with the Garmin GPSMAP66i?

You can view the service plans here.

3. What if I don’t want to subscribe to the inReach satellite communication subscription service?

You don’t have to. You can choose to not subscribe and the GPS will still work, just without the inReach communicator. Simply subscribe when you want to.

4. What are each of the map options available with this unit?

 –              With Topo Active maps

The GPS unit comes preloaded with Topo Active mapping. Garmins TopoActive mapping for 47 countries in Europe. Features topographic coverage for : Albania, Andorra, Austria, Belarus, Belgium, Bosnia-Herzegovina, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Kosovo, Latvia, Liechtenstein, Lithuania, Luxembourg, Macedonia, Malta, Moldova, Monaco, Montenegro, Netherlands, Norway, Poland, Portugal, Romania, Russia (Kaliningrad only), San Marino, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey, Ukraine, United Kingdom and the Vatican City.

–              With TOPO Great Britain Pro 1:50k (latest 2021 edition)

This is full GB at 1:50k mapping on a map card, which sits in the back of the GPS unit.

The TOPO PRO means that it is the latest map card from Garmin, giving you off road turn by turn routing within the National Parks, this means you can select a location many miles ahead and the GPS will route you via the footpaths to get to that location (like a car sat nav does).

Outside National Parks the GPS will navigate you in a straight line from waypoint to waypoint.

Don’t worry, here at the Outdoor GPS Shop we set the unit up for you so you can easily use these features and we even include a quick start guide so you can quickly get up and running with your GPS unit.

–              With TOPO Great Britain Pro 1:25k (NEW very latest 2024 v4 edition)

This is full GB at 1:50k, 1:50k and 1:250k mapping on a map card, which sits in the back of the GPS unit. As you zoom in and out you pass through each of these three map sets.

The TOPO PRO means that it is the latest map card from Garmin, giving you off road turn by turn routing within the National Parks, this means you can select a location many miles ahead and the GPS will route you via the footpaths to get to that location (like a car sat nav does).

Outside National Parks the GPS will navigate you in a straight line from waypoint to waypoint.

Don’t worry, here at the Outdoor GPS Shop we set the unit up for you so you can easily use these features and we even include a quick start guide so you can quickly get up and running with your GPS unit.

Only From Us

  • Unit set up by one of the Outdoor GPS Shop team.
  • Receive the Outdoor GPS Shop quick start guide, unit specific. Written in-house for you by one of the Outdoor GPS Shop team. 



This product is posted out using Royal Mail Special delivery which is guaranteed next-day delivery (before 13.00).

Any order placed online before 15.00 will be dispatched the same working day.

In the box

  • GPSMAP 66i
  • Access to Birdseye Satellite Imagery
  • Charging/data cable
  • Carabiner clip
  • Documentation

15 reviews for Garmin GPSMAP 66i

  1. 5 out of 5

    Steve Cadney

    I used to have a Garmin GPSMAP66s and an inReach mini so it was great to see Garmin incorporate both devices into one, I wish I had known this before buying my mini! Anyway love the GPS MAP66i, first Garmin handheld I have had with a built in battery and really like this, to date it is performing very well. Loved my 66s and now the 66i, great piece of kit.

  2. 5 out of 5

    David Taylor

    Great product! I know leave my mobile phone at home and be contactable but away from email, news, etc, the best of both worlds!

    Great battery life. Accurate mapping. Great routing. Great integration with Explore app on my iPhone is great, it enables me to load routes I find on other apps.

  3. 5 out of 5

    Anonymous (verified owner)

    Very speedy and efficient

  4. 5 out of 5

    Neil S. (verified owner)

    Outstanding service from start to finish. One of the best online shopping experiences I’ve ever had. They went the extra mile to get the device to me quickly and had already set it up for me, with a really useful ‘getting started’ guide that they’d written themselves. Outdoor GPS Shop is amazing. Other retailers could learn a lot here.

  5. 5 out of 5

    Jonathan D. (verified owner)

    Arrived quickly. Your effort to help explain things and customise it was appreciated. Thank you.

  6. 5 out of 5

    Robert Cotton (verified owner)

    What a great buy and a really competitive price … great bit of kit and I’m loving testing it and finding out about all the functions. The shop also offer training and support which would be great for someone who has no Garmin experience.

  7. 5 out of 5

    Adrian (verified owner)

    Much easier to use than my old Garmin Etrek.

  8. 5 out of 5

    Daniel (verified owner)

  9. 5 out of 5

    Steve A. (verified owner)

    Rugged and well-designed with intuitive controls. I do a lot of solo hillwalking on remote, pathless ground, where this will be a very useful tool. Very pleased with my purchase!

  10. 4 out of 5

    Anonymous (verified owner)

    Viewing 1:25,000 maps is truly awful on this device. However, the rest of the functions are great. If you want to view nice clear and crisp maps gets something else (a smart phone displays them very well with the OS app). If you want a rugged accurate GPS with satellite communication and tracking then this ticks the box.

  11. 5 out of 5

    Joe Gossage (verified owner)

    Excellent gps update from my 62s and it’s a step change. The team at outdoor gps were fantastic too. Price matched a competitor, very communicative and quick dispatch. Thank you.

  12. 5 out of 5

    Gianluca (verified owner)

    Amazing product, I bought it to follow gps tracks and it works perfectly. I feel safe with the SOS active when I am up on the mountains

  13. 5 out of 5

    John C. (verified owner)

    An excellent handheld GPS device. Both the device and Garmin’s BaseCamp software require a few hours of study to plan routes and navigate in remote regions. My device was purchased with the optional 1:25K OS mapping.

  14. 5 out of 5

    Dominic C. (verified owner)

    A very capable navigation device. I have had it a few weeks now and been out on walks and am very impressed. Not used the inReach features yet.

  15. 5 out of 5

    Don C (verified owner)

    Excellent bit of kit. I I bought it with the 50K OS mapping installed. The GPS functions have been everything I had hoped they would be, easy to set up and easy to use: a massive improvement on my old eTrex10 that I found very temperamental. Loads of functions that I still need to get to grips with to see if they will ever be of use to me.

    Already making use of the InReach satellite comms and the unlimited ‘check-in’ messages to keep base-camp aware of progress on solo outings. That works well and I’m happy to rely on this and stop carrying my old PLB.

    So deciding to go for a single device to be the GPS and the PLB seems to be a success.

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