Garmin Enduro 4: A 66-Gram Solar Watch That Runs 90 Days on One Charge
Garmin's Enduro 4 launches at $899.99 with up to 90 days of smartwatch battery, a titanium bezel and 66 g weight. What is new and who it is for.
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Garmin announced the Enduro 4 on October 6, 2026, calling it its longest-lasting GPS smartwatch with solar charging. It costs $899.99 and Garmin says it is available now. This is our read of Garmin's announcement and product page, not a wrist test.
The battery is the headline
The Enduro 4 pairs a 1.4-inch MIP display with a solar lens. Garmin says that adds up to 90 days in smartwatch mode and up to 320 hours in activity mode. Those numbers assume strong sun (50,000 lux) and, for the 90 days, about three hours a day outdoors, so treat them as a best case. The watch also has power modes, from Max Accuracy for short efforts to Max Battery for long recording.
What is new for training
Garmin adds grade-adjusted pace targets and a grade-adjusted rolling pace for hilly runs. Stamina zones and a stamina curve show how endurance changes during and across activities. A feature called Garmin Epic groups activities over days, weeks or months into one story in Garmin Connect, which suits multiday trips.
Built for weight and abuse
The Enduro 4 weighs 66 grams. The case is 51mm in fiber-reinforced polymer with a titanium bezel, and the lens is Power Sapphire. There is a white and red LED flashlight, 64 GB of memory for maps and music and a 10 ATM water rating. The new ComfortFit Fabric Band uses QuickFit, so swapping bands needs no tools. Garmin also says it has 50% more RAM than the Enduro 3 and a faster map engine for built-in routable maps.
Who it is for
Ultra runners, long-distance hikers and anyone who wants to forget about charging. If you want a watch for the office and the trail, our best luxury dive watches cover the mechanical side, and for something to travel with, the Timex Atelier GMT review shows a Swiss option at $1,450. For more gear news, see our tech section and tech news.
The catch
$899.99 is a lot, and 51mm is big. Garmin's battery claims depend on sunlight. If you only run a few times a week, a cheaper watch will do the job.
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FAQ
How much is the Garmin Enduro 4?
Garmin's suggested US retail price is $899.99, and its announcement of October 6, 2026 says the watch is available now.
How long does the Enduro 4 battery last?
Garmin quotes up to 90 days in smartwatch mode and up to 320 hours in activity mode with solar charging. Those figures assume 50,000 lux sunlight conditions and typical use, so expect less in cloudy weather.
Is the Enduro 4 too big?
The case is 51mm, which is large, but Garmin says it weighs only 66 grams. If you have a small wrist, try one on before you buy.
