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Garmin Forerunner 310XT

The Forerunner 310xt is Garmin’s entry-level triathlete watch. It’s filled with powerful training tools, making it a very good watch for experienced runners and cyclists.

What makes the 310xt ideal for triathletes? It’s rugged, able to withstand pounding, open swim starts; a long battery life: 20+ hours in exercise mode; and it seamlessly transitions from one activity to another with the multi-sport feature. The optional quick-release mount makes it easy to move the watch from wrist to bike mount.

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The Forerunner 310xt also boasts vibration alerts and has superior training aids like advanced workouts, Virtual Partner, and Courses. These three training features make it easy to program complex workouts on the watch and allow you to compete against a set pace or your own prior workouts saved on the watch.


It also has a large, highly customizable screen, perfect for viewing every piece of data you want displayed.

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On the downside, the numerous features built into this watch come at a cost of complexity and sheer bulkiness. Its chunky, square-ish shape, highlighted with orange accents, won’t win the 310xt any beauty awards.

But this burly and powerful watch is a perfect accompaniment to triathletes, cyclists, and experienced runners.


  • 20+ hour battery life in exercise mode
  • Powerful training features like advanced workouts, Virtual Partner, and Courses
  • Compatible with many accessories such as a heart rate monitor, food pod, and power meter
  • For triathletes it has features like multi-sport, custom bike settings, and a quick-release mount


  • Complex, requires a learning curve to fully appreciate all its features
  • Big and bulky


Experienced runners will appreciate the 310xt’s advanced training aids, but beginner and intermediate runners may prefer a simpler, sleeker, and less bulky GPS watch.


The Forerunner 310xt works with many bike-friendly accessories including a bike speed and cadence sensor and a power meter. Cyclists with multiple bikes will appreciate the custom bike settings when using the speed and cadence sensor. This allows you to program multiple bikes with different wheel sizes into the watch, eliminating the hassle of recalibrating the watch when switching between bikes.


The 310xt comes with features like multi-sport and the quick-release mount that make transitioning from swimming to biking to running extremely easy. Its 20 hour battery life ensures it won’t die during long workouts.


he 310xt’s is waterproof to 50 meters, great for swimming.


The 310xt’s long battery life is a nice feature for ultrarunners out for hours at time. GPS elevation is also useful when trail running in hilly terrain.


We think hikers will appreciate that the Forerunner 310xt can track elevation. It does this with GPS data, which isn’t super-accurate, but will provide a general sense of altitude, useful when hiking.



Battery-life: 20 hours exercise mode
Waterproof to 50 meters

Data Tracking

Time, Distance, Pace and Speed
Heart rate calculated calories
GPS elevation

Workout History

Breadcrumb map
1,000 laps
100 waypoints

Alerts & General Features

Auto lap
Auto pause
Customizable screens
Custom bike profiles
Time/Distance audible alerts
Vibration alerts

Training Aids

Interval workouts
Advanced workouts
Virtual Pacer
Virtual Partner


Downloads activites to a computer
Facebook and Twitter Sharing
Syncs with certain fitness equipment
Syncs with certain body composition scales


Heart rate monitor
Foot pod
Bike speed and cadance sensor
Quick-release mount
Power meter

Other Functions

Time of day

Ben Drew

Ben Drew

Ben is an avid road and trail runner, and has completed multiple marathons and ultras. A former running store owner, he now shares his knowledge and experience writing these articles.

The Wired Runner