Description

Train smarter and more efficiently with the Jack Daniels Heart Rate Zones (JDHR Zones) datafield. This datafield displays your current heart rate zone and running intensity based on the Jack Daniels running formula, so you can easily see how hard you're working and make adjustments to your pace or effort as needed. If you're looking to improve your running performance, the JDHR Zones datafield is a must-have. Get started today and see the difference it makes! Defining your maximum or 100% heart rate The JDHR Zones datafield uses your maximum heart rate defined in your userprofile to calculate the intensities. Many devices detect your max HR automatically. If not, it is important to define a correct and reasonable 100% heart rate. Do not enter a peak heart rate that you have actually measured during a hard effort. To find your 100% heart rate (HR), you can do steady runs uphill or 800m intervals with a short recovery time. After each run, measure your HR. If your HR is higher on the second run, you have not reached your 100% HR yet. Repeat this process until your HR does not increase on subsequent runs. This is your 100% HR. An example to get the idea: Theoretical HR: 170, Peak HR: 175, 100% HR: 167. As a test you can run some intervals and see if you can reach the correct intensity with the JDHR Zones datafield. If you can't reach the correct intensity, you have probably entered a too high 100% HR. You can also use an estimate based on your age with: 208 - (age * 0.7) The JDHR Zones datafield also writes the intensity of your run to the FIT file. You can see the intensity of your run in Garmin Connect.

What is new

Please note that this datafield is free but donations to support my work will naturally still be much appreciated: https://paypal.me/robinherbots?country.x=BE&locale.x=en_US https://www.buymeacoffee.com/robinherbots Changelog 1.21 - 1.22 - update fontsystem + rebuild 1.20 - update marq(2) resources 1.19 - new fontloader + lower memory usage 1.18 - fix cannot save settings 1.17 - fix scaling of fitchart + adjust color 1.12 - add MHR detection option in settings. 1.11 - correct Intensity calculation for FIT file.

Screenshots

Jack Daniels Heart Rate Zones · Screenshot 0 Jack Daniels Heart Rate Zones · Screenshot 1

Supported language (1)

English

Compatible devices (141)

Captain Marvel Captain Marvel D2™ Air X15 D2™ Mach 1 Pro D2™ Mach 2 Pro Darth Vader™ Darth Vader™ Enduro™ Enduro™ Enduro™ 2 Enduro™ 3 epix™ (Gen 2) epix™ (Gen 2) epix™ Pro (42mm) epix™ Pro (47mm) epix™ Pro (51mm) fēnix® 5 Plus fēnix® 5 Plus fēnix® 5S Plus fēnix® 5S Plus fēnix® 5X Plus fēnix® 5X Plus fēnix® 6 fēnix® 6 fēnix® 6 Dual Power fēnix® 6 Pro fēnix® 6 Pro fēnix® 6 Pro Dual Power fēnix® 6 Pro Solar fēnix® 6 Solar fēnix® 6S fēnix® 6S fēnix® 6S Dual Power fēnix® 6S Pro fēnix® 6S Pro fēnix® 6S Pro Dual Power fēnix® 6S Pro Solar fēnix® 6S Solar fēnix® 6X Pro fēnix® 6X Pro fēnix® 7 fēnix® 7 fēnix® 7 Pro fēnix® 7 Pro – Solar Edition (No Wi-Fi®) fēnix® 7S fēnix® 7S fēnix® 7S Pro fēnix® 7X fēnix® 7X fēnix® 7X Pro fēnix® 7X Pro No Wi-Fi fēnix® 8 AMOLED (43mm) fēnix® 8 AMOLED (47mm/51mm) fēnix® 8 Pro fēnix® 8 Solar (47mm) fēnix® 8 Solar (51mm) fenix® 9 - 43 mm fenix® 9 – 47 mm fēnix® E First Avenger First Avenger ForeAthlete 245 ForeAthlete 245 Music ForeAthlete 55 ForeAthlete 645 Music ForeAthlete 745 Forerunner® 165 Forerunner® 165 Music Forerunner® 245 Forerunner® 245 Forerunner® 245 Music Forerunner® 245 Music Forerunner® 255 Forerunner® 255 Music Forerunner® 255S Forerunner® 255S Music Forerunner® 265 Forerunner® 265S Forerunner® 55 Forerunner® 55 Forerunner® 570 - 42mm Forerunner® 570 - 47mm Forerunner® 645 Music Forerunner® 745 Forerunner® 945 Forerunner® 945 Forerunner® 945 LTE Forerunner® 955 Dual Power Forerunner® 965 Forerunner® 970 MARQ® (Gen 2) MARQ® Commander (Gen 2) – Carbon Edition MARQ™ Adventurer MARQ™ Adventurer MARQ™ Athlete MARQ™ Athlete MARQ™ Aviator MARQ™ Aviator MARQ™ Aviator (Gen 2) MARQ™ Captain MARQ™ Captain MARQ™ Commander MARQ™ Commander MARQ™ Driver MARQ™ Driver MARQ™ Expedition MARQ™ Expedition MARQ™ Golfer MARQ™ Golfer Mercedes-Benz Venu® Mercedes-Benz Venu® Mercedes-Benz Venu® 2 Mercedes-Benz Venu® 2 Mercedes-Benz Venu® 2S Mercedes-Benz Venu® 2S quatix® 6 quatix® 6X Rey™ Rey™ tactix® 7 tactix® 7 – AMOLED Edition tactix® 8 – 47 mm, AMOLED tactix® 8 – 51 mm, Solar Venu® Venu® Venu® 2 Venu® 2 Venu® 2 Plus Venu® 2 Plus Venu® 2S Venu® 2S Venu® 3 Venu® 3S Venu® 4 – 41 mm Venu® 4 – 45 mm vívoactive® 4 vívoactive® 4 vívoactive® 4S vívoactive® 4S vívoactive® 5 vívoactive® 6

Recent metric trend

Rating
Reviews
Snapshot dates
2026-10-27 → 2026-10-28