RedditRecs

Garmin - Forerunner 645

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Reddit Reviews:


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Based on 1 year's data from Feb 24, 2026 How it works

Liked most:

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"I've had a forerunner 645 since 2019 and it's still going strong!"

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"I love the data and it keeps me motivated!"

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"popping my Garmin (FR645, FR945, Fenix 7s, then Fenix 7s Pro) on the charger for 10min or so while I shower and that is enough that I never have to worry about the battery."

Disliked most:

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"if you have to take your phone anyway, there's a much better device on you for making calls. ... apple watches can have sim cards and place calls *without* having your cellphone on you. that's a real use case -- go for a run, leave the bulky phone at home."

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"the HRS in the 265 is so much better than the 645 was."

Reddit IconCorbixz 0.3
r/GarminFinally, Venu4 is here
5 months ago

How quickly does it charge? I've gotten used to popping my Garmin (FR645, FR945, Fenix 7s, then Fenix 7s Pro) on the charger for 10min or so while I shower and that is enough that I never have to worry about the battery. Think the same would be true of the Venu 4?

Reddit IconEmmy_Strange 0.3
r/GarminFenixOne year after Apple to Garmin
3 months ago

I had an Apple Watch Series 3 for many years. Then I bought a FR645 to try alongside, just for running. Loved it so much I decided to go full Garmin with a FR745. Loved that watch so much, until I smashed it climbing 🤦‍♀️ Decided to upgrade to a Fēnix 7S SS because I wanted maps and I clearly needed the sapphire glass. I’ve had the Fēnix maybe 2.5 years now. Recently, I thought I might prefer an Apple Watch as I am now dealing with chronic illness and have not been able to engage in any of my usual sporting/outdoor activities for 6 months. I lasted 3 weeks with an Apple Watch Series 11 before coming back to my Fēnix. I just prefer the MIP display, the battery and the buttons. I don’t really care for smart features. Also the workout screens and maps but obviously not using those much right now. Sold the Apple Watch yesterday. No regrets.

Reddit IconImportant_Article_71 0.3
r/GarminWatchesWhich Forerunner to chose?
7 months ago

Just got a 265 I am happy with

r/GarminWatchesWhich Forerunner to chose?
7 months ago

Same here. Loved my 645 but I am happy with the upgrade.

Reddit IconMiguelSTG 0.3
r/GarminWhat Garmin watch do you own and why?
about 1 month ago

FR645 is what's on my wrist, I like the screen color and contrast. I also own a 6x, but the screen was lacking, although the golf function is much better on the Fenix.

Reddit IconPhrexeus 0.3
r/GarminForerunner 255 still worth it?
7 months ago

Yeah I've had mine for 6 months or so, it's a great watch and much better than the 645 I had previously. It gives heaps of running dynamics especially if you pair it with a chest strap. It's more than enough for most runners, assuming you don't need navigation/maps.

Reddit Iconshadrach103 0.3
r/GarminWatchesBest model if you don't care about smart features and want to just track runs?
10 months ago

Funny thing is do not carry a phone on any runs except for my long trail runs as I'll have a hydration vest for those. I've been running with an older Forerunner 645 that is more than sufficient for what you are looking for. Any of the lower-end Forerunners is what you should be looking at.

r/GarminWatchesBest Garmin Running Watch 2025 Recommendations!
5 months ago

Love my 265S and I don't feel like I'm missing anything that the more expensive models offer. I no longer use the third-party arm band that I paired with my old FR 645 as the HRS in the 265 is so much better than the 645 was. GPS tracking is great and initial sync-up only takes a few seconds. I honestly ignore most of the training/recovery crap in the watch as I find it pretty useless. I thought I might not like the AMOLED after using a MIPS watch for years but it I find the AMOLED is great once you get used to the brief wake-up delay.

Reddit Iconspe033 0.3
r/XXRunningIs Garmin worth it?
5 months ago

Depends if you're into the data! I've had a forerunner 645 since 2019 and it's still going strong! I love the data and it keeps me motivated! Meanwhile my husband runs every day with no watch and zero concept of how long and fast he runs (I find that crazy, but he's a WAY better runner than I am so obviously it works for him!)

Reddit IconstrangeMeursault2 0.3
r/GarminWhat Garmin watch do you own and why?
about 1 month ago

I picked up an FR970 when my FR645 broke late last year. I think a fair bit more advanced than I need but I thought I would treat myself.

Reddit Iconbonmorning 0.0
r/OpenWaterSwimmingDevice to monitor heart rate while swimming
5 months ago

I use a Garmin Forerunner watch, and it displays heart rate while tracking activity. The reading is pretty visible to me even with slightly foggy goggles but ymmv. They have a lot of models with this capability, so maybe you can find one with a bigger screen. The default heart rate screen also has a colored Zone indicator, if that's easier to see & you're not looking for exact numbers https://support.garmin.com/en-US/?faq=kbOXNev7NS4DQcc3IjAV49

Reddit IconGurnug 0.0
r/StravaSo you guys track your workouts directly with Strava?
10 months ago

I use Garmin forerunner watch, sync Strava with Garmin Connect and sync Komoot with Strava. It works like a charm.

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