Garmin Forerunner 235 running watches are up to $190 off for Prime Day

TL;DR: The smart Garmin Forerunner 235 running watch is on sale for as low as $139.99 for Amazon Prime Day, saving you up to $190. (Click "deal of the day" to see this price.)

If you're an active runner, you probably like to track your personal records. Keeping track of your own time is an OK method, but a fitness tracker that records your time and your heart rate and calories burned is an even better option.

The Garmin Forerunner 235 running watch does that and you can get one for as low as $139.99 at Amazon in honor of Prime Day.

The Forerunner 235 has 24/7 heart rate monitoring that you can watch change in real time. In addition to heart rate, the watch also tracks distance, pace, time, sleep, and more. Plus, you'll receive on-wrist notifications from messages and apps. Read more...