Garmin Forerunner 255 vs. 955: Which Should You Pick?

Forerunner 255S Music next to the Forerunner 955 Solar
Forerunner 255S Music and 955 Solar

The Forerunner 255 and 955 were released in June 2022, and they’ve taken the Forerunner series to a whole new level. The Forerunner 255 became a triathlon watch and rendered the Forerunner 700 series obsolete. The Forerunner 955 is the first Forerunner to have a touchscreen, and it came out at a retail price $100 cheaper than its predecessor.

Both watches are extremely capable and are the most accurate units I’ve tested so far, so it can be hard to make a choice (though it’s also hard to go wrong). In this post, I’ll go over the reasons to choose one watch over the other.

As context for my review, I’m a distance runner who trains mainly for marathons, but I’ve also dabbled in trail running and triathlons. I’ve been using a loaner FR255S Music and FR955 Solar for a few months, and I eventually bought a used FR255S Music for further testing. I’m a GPS watch nerd and have tested all the most popular Garmin and COROS watches, and want to help you make a decision (check out the rest of my GPS watch comparisons).

This post contains affiliate links, meaning that I earn a small commission on any purchases, at no extra cost to you. Your support allows me to keep writing reviews like this one 🙂

Things in Common: Forerunner 255 and 955

The Forerunner 255 and 955 have a lot of similar features. Here’s a quick overview of them:

Fitness tracking for common activities: You’ll be able to track a wide variety of indoor and outdoor activities, including:

RunningCardio and Elliptical Training
Indoor + Outdoor Track RunningStair Stepping
Treadmill RunningFloor Climbing
Trail Running (+ Ultra Running)Indoor Rowing
Virtual RunningPilates
Biking (+ eBiking)Yoga
Indoor BikingHiking
Mountain Biking (+ eMountain Biking)Skiing
Pool SwimmingSnowboarding
Open Water SwimmingXC Classic Skiing
Triathlon/MultisportStand Up Paddleboarding
StrengthRowing
HIIT

Everyday fitness stats: Steps, floors climbed, heart rate, Pulse Ox, stress, sleep, menstrual cycle.

Forerunner 255S Music and Forerunner 955 Solar heart rate sensors

Training metrics:

  • VO2 max
  • Recovery Time
  • Race Predictor (and how your predicted paces have trended over the last 4 weeks))
  • Training Status (how productive your training is)
  • Training Load (whether your training is a smart amount)
  • Training Effect (how your workouts impact your endurance, speed, and power)
  • HRV status (heart rate variability while you sleep helps you understand your health and recovery)
  • Body Battery (energy levels based on heart rate variability, stress, and activity).

More precise tracking: The new All-Systems mode lets your watch use any of the satellite systems (GPS, GLONASS, Galileo, BeiDou, QZSS) and switch between them based on the quality of their signals. This is the default setting for the watches. Multi-Band mode is the even more accurate option that allows your watch to get L1 and L5 frequency signals. Both the Forerunner 255 and 955 have had the most accurate tracking I’ve seen in a watch, even when “just” using All-Systems mode and not the more powerful Multi-Band mode.

Forerunner 255s screen with the GNSS options (GPS only, All Systems, etc.)

Workout features: Interval workouts, PacePro (helps you create and stick to a pacing plan), suggested workouts, breadcrumb navigation, Audio Prompts.

Smartwatch features: Weather, calendar, messages, Garmin Pay (contactless payments), find my phone/watch, Smart Lock (automatically unlock your phone when your watch is in range).

Music functionality: Download tracks to your watch or use Spotify Premium, Amazon Music, Deezer, or iHeartRadio. Available on the FR255 music version only and all versions of the FR955.

Safety features: LiveTrack and Incident Detection, allowing loved ones to track you during your workouts and be alerted if an incident is detected (your watch must be connected to your phone to access these features).

They do have pretty substantial differences though, so let’s get into those now!

Reasons to Pick the Forerunner 255

Data after a run on the Forerunner 255S
Forerunner 255S music in black lying flat on a white surface

The Forerunner 255 is the less premium watch, so this section will naturally be shorter. That said, it’s still loaded with features and could be the better choice for you over the Forerunner 955.

One of the most important distinctions is price. The Forerunner 255 retails at $350-400, depending on whether you get the music or non-music version. The standard Forerunner 955 is $500, and the solar version is $600. If you don’t need the extra features of the FR955, you could save $100+ by getting the FR255.

Heart rate sensor of the Forerunner 255S
Side view of the Forerunner 255S music

Those with small wrists may prefer the Forerunner 255S, the smaller version of the FR255. It weighs about 20% less than the FR255 and 33% less than the FR955. Do keep in mind that the physical size of the FR255S is significantly smaller as well, though the FR255 and FR955 have a similar physical size (the FR955 is just slightly thicker).

Here’s a quick table with the actual weights and sizes:

WatchWeightDisplay
FR25549g1.3″
FR255S39g1.1″
FR95552g1.3″

Forerunner 255S on my wrist in the direct sunlight
Side view of the Forerunner 255S music

The FR255S watch strap is also shorter and thinner at 18mm vs. 22mm for the FR255 and FR955. I personally find the FR255S really comfortable to wear, but find the FR955 quite bulky and uncomfortable to wear for long periods of time. For reference, my wrists are around 5.5 inches (14cm) in circumference.

The FR255 also has a quick release band, making it really easy to change bands. The FR955 requires a special tool, though most replacement bands will come with one.

Reasons to Pick the Forerunner 955

Forerunner 955 Solar run summary
Forerunner 955 Solar heart rate sensor

The Forerunner 955 is among Garmin’s most capable watches, and it does basically what the ultra-premium Fenix series does except in a (still-durable) plastic case.

The FR955 is the first watch in the Forerunner series to have a touchscreen. I wasn’t sure how I’d like a touchscreen Forerunner because the sporty build didn’t seem fitting for one, but it’s pretty convenient. I really like being able to scroll through the data screens on the run summaries, and swiping through my performance and daily fitness data.

If you don’t like touchscreens, you can always disable it, and you would never be able to tell that the watch has a touchscreen since the glass is very discreet. In fact, it’s Corning® Gorilla® Glass DX, which is similar to the other lens materials.

The FR955 tracks a whole slew of activities that are more specialized, including: Road Biking (vs. just Biking), Gravel Biking, Bike Commuting, Bike Touring, Cyclocross, Backcountry Skiing, Backcountry Snowboarding, XC Skate Skiing, Snowshoeing, Kayaking, Climbing/Bouldering, Tennis, Pickleball, Padel, and Disc Golf.

Wearing the Forerunner 955 Solar while bouldering
Wearing the Forerunner 955 Solar while bouldering—got a little covered in chalk haha

One big benefit of the Forerunner 955 is its faster GPS acquisition compared to the Forerunner 255. The FR255S Music I tested acquired GPS signal in 17.5 seconds on average, which is a bit of a wait. The FR955 Solar I tested was at least twice as fast, if not more. I never bothered timing it because it was so quick, and just as fast at latching onto signal as COROS watches (sometimes it was even faster).

The FR955 has longer battery life than the FR255, so if you’re planning to do ultra-endurance events or go on long hikes, you may prefer it. Here’s a table of the battery life:

FR255SFR255FR955
Smartwatch mode12 days14 days15 days
GPS-only GNSS mode26 hours30 hours42 hours
All-Systems GNSS mode20 hours25 hours31 hours
All-Systems GNSS mode plus music5.5 hours6.5 hours10 hours
All-Systems plus Multi-Band13 hours16 hours20 hours
*the solar version of the FR955 may extend the battery life by a few hours/days if it’s in the right conditions

Some of the terms in the above table may sound like gibberish, so let me explain. “GNSS” stands for Global Navigation Satellite System. As mentioned earlier, “All-Systems” lets your watch use any of the satellite systems (GPS, GLONASS, Galileo, BeiDou, QZSS) and switch between them based on the quality of their signals. This is the default setting for the FR255 and FR955. “Multi-Band” is the dual-frequency option that allows your watch to get L1 and L5 frequency signals, and is the most accurate.

I was actually a little disappointed by the battery life of the FR955 compared to the FR255. The FR955 only lasts 1-3 more days in smartwatch mode, though it has 62% better battery life in GPS-only mode compared to the FR255S and 40% better compared to the FR255.

While wearing the FR955 Solar only for workouts and keeping it in All-Systems mode, I was able to get around 12 days of use and 6-7 hours of GPS tracking before it would dip under 30%. If I let the watch go under 20%, I could get a full 2 weeks out of it. This is good battery life, but I would expect such an intense watch to last even longer, especially since the FR255S Music has also lasted me around 11 days (though with 1-2 hours less of GPS activity).

Forerunner 955 Solar lying flat
Forerunner 955 Solar side view

If you get the solar version of the FR955, you can extend the battery life slightly, but you have to be in the right conditions. Here are the battery life estimates below (Garmin says these are assuming 3 hours per day outside in 50,000 lux conditions, which is a slightly overcast day).

  • Smartwatch mode: Up to 15 days / 20 days with solar
  • GPS-only mode without music: Up to 42 hours / 49 hours with solar
  • All Systems GNSS mode plus Multi-Band without music: Up to 20 hours / 22 hours with solar
  • Ultratrac mode: Up to 80 hours / 110 hours with solar

It’s the winter in the Midwest for me currently, so it’s hard to meet those solar conditions, but they would be no problem in the warmer months. To help you understand your solar conditions, the FR955 Solar has a widget which lets you know the solar intensity it’s been exposed to over the last 3 hours.

It’s worth noting that the FR955 Solar is physically different from the regular version, as it has a thin solar rim around the display. The display sizes are the same, however, as space for that rim is taken from the bezel. I don’t love the look of the solar rim, but it’s not that bothersome. It can making taking photos of the watch face difficult though, so keep that in mind if you like posting photos of your workout summaries to social.

Finally, the Forerunner 955 has full-color topographic and landscape maps. They come preloaded and are very detailed. You get names of streets, trails, and major landmarks, all with turn-by-turn navigation. If you’re planning to do long hikes in remote areas, you may appreciate this feature. The Forerunner 255 has navigation, but only a breadcrumb trail, which is harder to follow.

Mapping on the Forerunner 955 Solar

The Bottom Line

Both the Forerunner 255 and 955 are packed with features. You’ll have metrics to improve your training performance, incredibly accurate GPS tracking, lifestyle features like Garmin Pay, safety features, and more.

If you have a smaller wrist or don’t need the extra features of the Forerunner 955, the Forerunner 255 is a better choice.

Otherwise, you may like the Forerunner 955 if you:

  • Do a wider range of activities
  • Use your watch more heavily for messages, music, etc.—the touchscreen is very convenient
  • Do ultra-endurance activities (the longer battery life and mapping is helpful)

If I had to make a choice, the Forerunner 955 would be too intense for me in terms of features, and it sometimes hurt my wrist after prolonged periods of wear, so I’d go with the Forerunner 255. But I did enjoy being able to track activities like Tennis, Pickleball, and Bouldering. The touchscreen was also really nice and I instinctively wanted to swipe the screen when I was using the Forerunner 255.

Overll, they’re both some of the best GPS watch options out there right now, so you’re going to make a good decision either way.

Where to Buy the Forerunner 255 and 955

If this review helped you, it would mean a ton if you purchased through my affiliate links or codes. I also want to encourage you to buy secondhand or from small, local running stores if you can. I don’t get paid if you do that, so if you still want to show your appreciation financially, you’re welcome to buy me a virtual coffee.

Garmin

Forerunner 255

Forerunner 955

Amazon

Forerunner 255

Forerunner 955

Other retailers

Swappa (used electronics)
REI
eBay


If you have any questions, feel free to leave them in the comments. Also let us know what you decided on and why!

You may also like these posts:

Forerunner 255 vs. 745
Forerunner 55 vs. 255
Forerunner 255 vs. COROS APEX 2

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