Garmin was the most popular wearable GPS being used at the Ironman World Championship, with Polar second and Suunto third.

2017
Garmin 1869
Polar 91
Suunto 20
Timex 13
Tomtom 9
Smart Watches 5

2016
Garmin – 1673
Polar – 85
Suunto – 47
Tom Tom – 24
Timex – 16
Fitbit – 1