Garmin Features: A Reference Guide for Runners and Athletes
Reference pages for every major Garmin metric — what each number means, how it is calculated, and how accurate it is. Select a category below.
- Physiological Measurements — metrics that estimate or track underlying biological capacity, including VO2 max, HRV Status, lactate threshold, respiration rate and Pulse Ox. These are the foundational numbers from which many of Garmin’s training and recovery features are derived.
- Training — features that analyse training load, stimulus and adaptation over days and weeks, including Training Readiness, Training Status, Training Load and race predictor.
- Performance — features that assess and predict athletic performance, including Race Predictor, Performance Condition, Pace Pro and Real-Time Stamina.
- Sleep and Recovery — features that assess recovery between training sessions, including Sleep Score, Body Battery, Recovery Time and Sleep Stages.
- Running Dynamics — metrics measured or calculated during a recorded running activity, including running power, ground contact time, vertical oscillation, cadence and grade-adjusted pace.
- Heart Rate and Stress — features that monitor cardiovascular and autonomic nervous system response throughout the day and during activity, including wrist heart rate, Stress Score and Intensity Minutes.
- Health and Wellness — long-term health markers including Fitness Age, daily steps and calorie estimation, intended to give context about overall health trends over weeks and months.
- Navigation and Safety — features that support route navigation, location sharing and emergency assistance, including LiveTrack, Incident Detection and Assistance Plus.
- Hardware — the physical components behind the metrics above, including the Elevate optical heart rate sensor, GNSS chipsets, solar and display technology, battery engineering and case materials.
About This Section
Every page in this section is written to a consistent structure that covers: what the metric measures, how Garmin calculates it, what affects the reading, how accurate the published evidence suggests it is, which devices support it, and how it connects to other features in the ecosystem. Competitor equivalents on Polar, Apple, Coros, Suunto and Wahoo are documented where they exist.
Sources are weighted by tier. Garmin’s official documentation and Firstbeat Analytics white papers take precedence, followed by peer-reviewed research from journals including Medicine and Science in Sports and Exercise and the Journal of Sports Sciences. Where evidence is limited or disputed, the pages say so.
Pages are updated when Garmin releases firmware changes that materially affect how a metric is calculated or displayed. The publication date and most recent update date are shown at the foot of each page.
Explore the full resource library
This site covers endurance sport technology across a range of dedicated reference sections. Each one collects the most relevant articles, tests, and analysis on its topic in one place.
Buyer guides
- Best sports watch — tested recommendations by sport and athlete type: triathlon, running, marathon, cycling, hiking, and women
- Best Garmin watch — Forerunner versus Fenix by series, sport, and budget
- Best wearables — recovery trackers, heart rate monitors, running power meters, and female athlete tech
- Best cycling products — computers, smart trainers, power meters, and cycling heart rate monitors
Brand and product guides
- Amazfit — the full Amazfit range from Balance to Cheetah to T-Rex, accuracy tests, HYROX partnership, and Zepp Health analysis
- Apple Watch — athlete-first coverage of Apple Watch across running, cycling, and triathlon
- COROS — watches, features, and firmware across the full COROS range
- Garmin — the company, the platform and the full range, and the starting point for choosing across every Garmin product line
- Garmin Edge — bike computers from entry-level navigation to flagship endurance and mountain biking
- Garmin Fenix — every model, feature, and firmware development for Garmin's flagship outdoor watch
- Garmin Fenix 8 Series — which variant to buy, upgrade advice, accuracy data, and the full Fenix 8 review and firmware coverage
- Garmin Forerunner — the full Forerunner line covered from entry level to triathlon flagship
- Garmin Instinct — rugged GPS watches for endurance and adventure athletes
- Garmin Features Explained — how Garmin's metrics work, from Training Load and Body Battery to Race Predictor and HRV Status
- Google Fitbit — Fitbit Air, Google Health, Pixel Watch and the Wear OS platform
- Polar — watches, sensors, Polar Flow and training science across the full Polar range
- Suunto — Race, Vertical, Run and the SuuntoPlus ecosystem
- Strava — features, privacy, segments, and how Strava fits into a serious training setup
- Wahoo — KICKR trainers, ELEMNT bike computers, and the Wahoo ecosystem
- WHOOP — strain, recovery, sleep and the full WHOOP ecosystem
Specifications database
- Full Specifications Database — detailed spec sheets, battery life, sensor lists and generation-on-generation comparisons for current Garmin, COROS, Amazfit, Samsung, Google Fitbit, Huawei, Polar, Suunto, Wahoo and Apple Watch models
Sport and topic guides
- Running Watches — how to choose by discipline: road racing, trail, track, beginner, and multisport
- Triathlon and Multisport Technology — watches, sensors, and race-day tools for swimmers, cyclists, and runners
- HYROX — training science, race analysis, and technology for the functional fitness race format
- parkrun — technology, training, and performance for the weekly 5K
- Hiking Technology — navigation, safety, and trail tech for walkers and hikers
- Heart Rate Monitoring — optical sensors, chest straps, accuracy comparisons, and how to set training zones
- GPS Accuracy — how satellite systems perform across brands, terrains, and conditions
- Sports Watch Battery Life — battery claims, real-world tests, and how to manage battery life across Garmin, Apple, Amazfit and Coros
- Recovery Trackers — WHOOP, Oura, and the science of readiness scoring
- Female Athlete Tech — wearables, physiology, and performance for female endurance athletes, covering cycle-synced training, RED-S, HR accuracy, and VO2max
- Sports Science — peer-reviewed research on HRV, VO2max, lactate threshold, running power, wearable accuracy, and supplementation
- Testing Methodology — how this site tests GPS accuracy, heart rate, battery life, and other performance claims
Content series
- Release Radar — confirmed launches, leaks, and rumours across Garmin, Apple, COROS, Polar, Suunto, and Wahoo
- Deep Dive Feature Files — weekly firmware feature updates across all brands (bug fixes excluded)
- Fix Files — weekly firmware bug fix tracking across all brands
