Best running watches built-in heart rate monitoring: Garmin Forerunner 645 Music, £399, garmin.com The Garmin Forerunner is one of the priciest options in this list for a reason.

Powr Labs Heart Rate Monitor Chest Strap - ANT + Bluetooth Chest Heart Rate Monitor with Chest Strap - HRM Run Bike Tri Cycling - Chest Strap Heart Monitor for Strava Zwift Wahoo Garmin Polar Peloton. 4.3 out of 5 stars 520. $45.00 $ 45. 00. FREE Shipping by Amazon. More Buying Choices $41.40 (4 used & new offers)

Founded in 2001, Heart Rate Monitors USA (HRM USA) is one of the leaders in fitness and health technology! We strive to go above and beyond for our clients needs in helping select products that are not only useful, but specifically tailored for each individual. We also offer a lengthy 45 Day Hassle Free Return Policy.

Cleveland Clinic researchers asked 50 healthy adults to wear various heart rate monitors, including an EKG while walking or running on a treadmill. When measured against the EKG, the chest strap heart monitor showed the most accurate readings.

Using a heart rate monitor is the best way to get more data from your training sessions, and that's useful whether you're a novice runner, or a serious athlete.