Forerunner 945 - Recent Threads

How to change activities from swim to swim/bike/run as it was https://drive.google.com/file/d/19pfTgkwMr28QTZExDw2LVMV5vtqTaXIx/view?usp=drive_link

7350573 — Wed, 18 Mar 2026 18:14:55 GMT

How to change activities from swim to swim/bike/run as it was

drive.google.com/.../view

Garmin Pay In Canada - list out of date

amlsmith — Thu, 05 Mar 2026 13:51:51 GMT

Garmin Pay is no longer supported by Manulife Bank VISA. The list of Canadian card that can be loaded to Garmin Pay are very very few.

Watch connected to Gramin Express but not recognized

Changry — Sun, 01 Feb 2026 21:32:55 GMT

I have an interesting problem with two contradictory messages ---> green light indicates the watch is connected, but Garmin Express is asking for the device to be plugged in.

Has anyone here experienced this before and able to offer a solution?

GPS fix time increased / GPS firmware downgrade

Bembel75 — Sun, 01 Feb 2026 11:30:55 GMT

For my FR945 to get a proper GPS fix (green GPS notification), it takes at least 15, usually 30+ minutes. For a few months I have ignored it and just adjusted the distance when running or cycling, but eventually I got annoyed by it.

So I dug deeper into the watch and found the ephemeris data (CPE.bin file in the Garmin/RemoteSW) present, but it seems the software doesn't pick it up ("CPE : Missing" in System/Info).
Deleting the file, the folder, synchronising with Garmin Connect, by WiFi and Garmin Express always brought back a fresh copy of the CPE.bin file, but did not change anything in the behaviour above.
Factory resetting the watch a dozen times (with different firmware versions), deleting the device's xml file or anything else I found in the forum did not help either.

So I have started to downgrade the firmware, hoping a legacy version of the firmware would downgrade the GPS firmware as well. Though I have tested a lot, the only firmware that does not get downgraded is the GPS - it keeps its version at 6.60 - if the main software is lower than its respective GPS version, the GPS version shows up with an exclamation mark like this "GPS : 6.60 (!)".

It was rather challenging to get legacy versions of the FR945, did not get them from Garmin, but have tested these:

Main software: 2.80, 6.20, 6.85 beta, 9.00, 9.56 beta, 9.58 beta, 10.40, 11.03 beta and of course 13.70

Firmware versions of other aspects of the FR945 get downgraded, like ANT/Bluetooth, WiFi, SensorHub and CIQ - just GPS stays on 6.60.
Is this maybe the firmware versions I have tested, do not come with a GPS firmware portion? I have also created a "force.tmp" file in the Garmin folder...

As the watch's hardware works perfectly well, getting a manual GPS fix without using the ephemeris data after approx. 30 minutes and the activity is flawlessly recorded, I assume the latest GPS update might have bricked the ephemeris data file to be picked up and used for speeding up the GPS fix.

Has anyone had this issue, too, and found a way to fix it? Or does anyone have other firmware versions or knows how to (temporarily) downgrade the GPS part of the watch's firmware?

I would lilke to reprogramm the GPS part of the watch's firmware - or downgrade and test - to make sure I can continue to use this really expensive piece of hardware.

Any help would be hugely appreciated!

chronic training load has stopped

Wayne C — Sat, 31 Jan 2026 02:50:07 GMT

chronic training load has stopped updating, I only get acute training load. Is it just me? or is it a more widespread issue?

Screen damaged and won't switch on

9804555 — Mon, 19 Jan 2026 22:36:05 GMT

Hi,

Recently, my Garmin Forerunner 945 screen started to show signs like delamination around the edges. Apart from that problem, the watch continued functioning ok but now while swimming it died and won’t switch back. It was almost fully charged at the time.

I followed all the steps in the “My Forerunner 945 Will No Longer Turn On” help page but nothing worked.

Is this a common problem with the Forerunner 945? Up until now it had been very reliable.

BT does not work

5553690 — Fri, 16 Jan 2026 10:51:37 GMT

I updated my FR 945 a week ago via Garmin Express to 13.7. Since it lost its pairing with my iphone and unable to repair. Mobile connect find the watch but it does not get pairing code.

Any help in this case?

Running Dynamics question

colinbycroft — Wed, 10 Dec 2025 12:07:48 GMT

Hi all, I've searched the forum and manual but can't find an answer so hope someone can answer for me.
I'm currently doing Couch to 5K after an injury stopped me running for a couple of years. I'm using the NHS app to plan each workout and using my 945 to track it, just manually triggering laps when changing from walk to run, and I wondered if the 'Running Dynamics', e.g. Average Stride Length, Vertical Ratio etc, consider BOTH the walking and running laps or just the running laps as the 'Auto Run Detection' knows what I was doing and logs it correctly in Connect.

Thanks in advance :)

garmin connect : temps de déplacement erroné

8907437 — Wed, 12 Nov 2025 16:11:19 GMT

j'utilise ma forerunner 945 pour la randonnée. La montre affiche correctement le temps totalede la randonnée et le temps de déplacement . lorsque que j'envoie les données à garmin connect le temps de déplacement devient faux (il passe par exemple de 5 h à 2 h) . le temps total de la randonnée reste exact . Quelqu'un peut il m'aider ?

My measurement for the 2025 NYC marathon was 44.8km, could this be an error with the Garmin??

cachin84 — Mon, 10 Nov 2025 21:57:21 GMT

Multisport workout created in Garmin Connect not showing on watch

9055755 — Sun, 19 Oct 2025 20:29:52 GMT

Now that Multisport workouts are able to be created in Garmin Connect, I created a workout for a bike/run brick and placed it on my calendar. But when I went into the watch to select it the workout isn't there. All my other scheduled workouts are on the watch's schedule screen, but the multisport workout is not. Does the watch not recognize multisport workouts for some reason? Any help is appreciated.

Beginner. Marathon plan custom, in my watch

6311211 — Thu, 16 Oct 2025 08:37:35 GMT

Hello all.

I am a happy new owner of my frst Garmin watch, forerunner 945.

I want to run a marathon in 3 and half weeks, and I would like to give some data of my goal, to my watch, and it proposes to me some daily activities, to achieve as close as possible my target.

Do you think this is possible ?

Thank you in advance for any answers.

Last update in septmber 2025

Hamy45!! — Tue, 30 Sep 2025 10:59:04 GMT

Anyone having issues with accurate hrv status, heartrate, sleep monitoring with the most recent update? I did the restart and software checks. Still out of wack. Not very happy, only had watch less than a year

Differences in measured pace and report pace

3684016 — Sat, 27 Sep 2025 19:28:42 GMT

Hi, I run with a Garmin FR 945 and an HRM Pro Plus.

The pace that my watch reports, and which is recorded in the garmin connect summary report, is slower than the pace calculated based on distance / km.

See this example from a superset:

The workout was 1.61 km slow, 200 m fast, 600 m semi-fast, 1.61 km goal pace 0.8 km slow. As you can see I had to rest a few times. The watch reported that I was way slower than needed. The highest speed given (and measured on my watch) was 3.39 min/km, in the 200 m fast leg.

Yet, if I just look at the time spent in each stage and divide by the distance covered, my pace was faster:

It shows the mean speed of the fast segment as 3.35 (clearly impossible if my max speed is 3.39) and of the semifast as 4.24, also way faster than the readings my watch gave me. The watch readings match what is in the report. What is up here?

Forerunner showing signs of water damage

1817109 — Wed, 24 Sep 2025 20:22:29 GMT

I have been the proud owner of a Forerunner 945 since 2019. As of the last 7 days I am seeing moisture build up on the watch face. I have tried a few tactics to dispel the water including using silica outsized dessicant packets. I was hoping my watch would remain robust for longer than this. Please advise. I have a half marathon this week so have been enjoying using the watch to track my training schedule and build up to the event. Has anyone experienced similar?

Is the Forerunner the bestwatch triathlon for reading?

Sirdoh — Tue, 23 Sep 2025 16:04:02 GMT

I already have the Instinct 2 and while it will track all of these sports, my eyesight is not the best, so I have difficulty reading the display on thr move. For instance ican see heart rate in huge writing but the pace text is too small. Is the Fotrunner any better? What are the advantages?

Activity is unvalid

Franzi_aus_Berlin — Sun, 21 Sep 2025 17:58:23 GMT

Hey,

I have just finished my first marathon and wanted to save the run. Unfortunately, Garmin says that the activity is unvalid. I did some research and found that there are Fit File Repair Tools. I tried to use them but I have no idea how to exactly do it. Could someone help me with the file? I would be really happy.

Kind regards from Berliin

Franziska

Easy run pace for Amy's Garmin coach plan, with zones set after lactate threshold.

3684016 — Mon, 15 Sep 2025 19:24:35 GMT

I am in doubt what pace to set for my easy runs (coach Amy). My goal pace is 10 km in 50 minutes.

The coach app says to aim easy pace for 40 to 80 seconds slower than goal pace, that is 5.40 to 6.20 min/km. But that puts my heart rate close to my threshold level. I have lactate threshold of 165 (max puls 182, resting 57 - I am a 49 year old M).

If I try to run in zone 2 the pace is around 6.40, but my zone 2 (LTHR based) is 141-156, so this is hardly low aerobic exercise, and my watch also tells me that I get no "low aerobic" exercise if I follow this (which is what I have been doing). I have also tried running at 75-85% LTHR (around pulse 130-140) as recommended in low heart rate running training, but that puts my pace up around 7.00 and I wonder if that is not too slow (it does not feel like exercise, really, I don't break a sweat or change my breathing pattern). What level to aim for?

Without wearing my garmin heartbeat shows up

6931959 — Sat, 13 Sep 2025 12:06:38 GMT

I have a question?

I used my garmin 245 every day, and last night I take out 9:34pm and never put back, now my watch still reflects heartbeat until 10:12pm and later stop, its this possible?

forerunner 945 comptatible avec brassard cardio polar verity sense ?

7716976 — Thu, 04 Sep 2025 13:51:06 GMT

Savez-vous si la garmin forerunner 945 est compatible avec le brassard de cardio POLAR VERITY SENSE. J’ai actuellement une ceinture HRM pro, mais les frottements sous les pectoraux et l’usure du plastique sur les électrodes me poussent à chercher une autre solution. Garmin ne faisant pas de brassard, je m’oriente vers polar.

Merci de vos retours

Pool swimming: Count of lanes / Strokes stops without correct reporting

KREK5 — Thu, 04 Sep 2025 09:29:13 GMT

After 5 years of (nearly) proper documentation of pool swimming, today the lane count, including stroke count, swolf stops without coming back

https://connect.garmin.com/modern/activity/20274776957

I stoped the session and started a new one, same situation, no count at all

KR Klaus

Provide update 13.70 for my watch FR945 ASAP.

8252685 — Wed, 03 Sep 2025 09:03:30 GMT

I am using the main FR 945 Serial Number: 5Z6025773, with software version 13:00. But for some time now, I have been facing issues with my watch, such as a very fast battery drain and time issues. Please release version 13.70 for my watch. The battery is draining in 1-2 hours. I need an update.

custom screen on multisport workouts?

Daznic — Sun, 31 Aug 2025 07:58:55 GMT

does any know how customise data screens on triathlon mode? i want the run leg to show overall race time, run leg time and run pace.

Anyone replaced the battery?

KR17 — Thu, 28 Aug 2025 15:45:40 GMT

Has anyone replaced the battery on the 945? Curious if it made much improvement?

My watch is over 5 years old. I feel like I'm charging it more often, every few days. Pulse Ox is off as I'm aware that's a drain.

So wondering about changing the battery. At 5 years, I'd be surprised if it isn't degraded.

And presumably replacement batteries have come a long way in 5 years. Some are advertising way higher mAH values, although appreciate with copies this could be garbage.

Interestingly, I just charged to 100%, and ran a GPS walk test off my wrist. Did 7 hours with 67% remaining, which actually seems pretty good. So maybe it's software rather than physical battery degredation.

Any thoughts?

Forerunner beyond repair

Kevlarrr — Fri, 22 Aug 2025 12:27:29 GMT

My Garmin running watch broke down, suddenly stoped and Garmin told me they don’t support or repair the device. Instead, they offered me a small discount on a new watch, but only on the model Garmin chooses, not the one I want. I think it’s time to switch brands as it seems I’ll have the same problem with the new watch in the future, or I’ll be forced to buy the model Garmin imposes on me. Pathetic