Garmin Forerunner band sizes

Smartwatch line17 references

The story of the Garmin Forerunner

Generations and strap changes

  1. 2025
    Forerunner 570 and 970

    Available in Singapore from 4 June 2025; the 970 has a titanium bezel and sapphire lens.

    Forerunner 570 comes in 42 mm and 47 mm; the 970 in a 47 mm case.

  2. 2023
    Forerunner 265 and 965

    First Forerunners with AMOLED displays; the 965 adds a titanium bezel. The 265 went on sale 31 March, the 965 in mid April.

    Case sizes: 42 mm 265S, 46 mm 265 and 47 mm 965.

  3. 2021
    Forerunner 945 LTE

    First Garmin smartwatch fully network-connected without a phone.

  4. 2018
    Forerunner 645

    First running watch built to connect to third-party music apps such as Spotify and Amazon Music; it could also store MP3s.

  5. 2015
    Forerunner 225

    Garmin's first watch with a built-in optical heart rate sensor.

  6. 2009
    Forerunner 310XT

    Garmin's first watch built for triathletes, covering swim, bike and run.

  7. 2006
    Forerunner 305

    Its GPS antenna wrapped partly around the wrist for better reception, and it sold for over six years.

  8. 2003
    Forerunner 201

    Garmin calls it the first GPS running watch on the market; large by later standards.

Firsts and innovations

Garmin says the Forerunner 201 (2003) was the first GPS running watch on the market.

The Forerunner 225 (2015) was Garmin's first watch with a built-in optical heart rate sensor.

The Forerunner 945 LTE (2021) was Garmin's first smartwatch that could connect to a network without a phone.

FAQ

Which bands fit the Garmin Forerunner?

It depends on the generation and case size. Forerunner 265: 22 mm. Forerunner 965: QuickFit 22.

Help

What is lug width?

The gap between the two lugs that hold the strap, in millimetres. A new strap must match it exactly: 20 mm lugs take a 20 mm strap.

Measure it in 30 seconds

  1. Take the strap off, or look at the back of it: many straps print their width.
  2. Measure the inside gap between the lugs with a caliper or a millimetre ruler.
  3. Round to the nearest whole millimetre. Most watches use 18, 20 or 22 mm.

Strap, quick release or system?

Most watches use spring bars, so any strap of the right width fits. Many smartwatches use their own band system instead, such as Apple Watch bands or Garmin QuickFit.