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Device Comparison for Marathon Training

Aug 13, 2025,

Overview

Caroline, an experienced marathon runner and coach, compares Garmin and Whoop devices for marathon training, highlighting their distinct functions and recommending the Garmin for training needs and Whoop for recovery insights.

Device Differences and Main Uses

  • Garmin is a smartwatch designed for tracking workouts, creating and following specific training plans, and recording accurate workout data.
  • Whoop is a fitness tracker focused on monitoring recovery, sleep, and strain without offering workout planning or a visual display.
  • Garmin setups, especially with a heart rate strap, provide highly accurate heart rate tracking vital for heart-rate-based training.
  • Whoop is mainly useful for monitoring sleep quality and daily recovery through a combination of heart rate variability, resting heart rate, workout strain, and sleep data.

Garmin Benefits for Training

  • Garmin allows users to track distance, pace, and heart rate in real time without needing a phone.
  • Specific interval workouts can be programmed into the Garmin, aiding precise execution of training sessions.
  • Music features in models like the Forerunner 245 allow for phone-free running with playlists.
  • Garmin’s heart rate data supports structured training based on defined heart rate targets.

Whoop Advantages for Recovery

  • Whoop provides recovery scores and detailed sleep tracking, often reporting less sleep than Garmin.
  • Recovery metrics from Whoop correlate with perceived recovery and fitness level.
  • The Whoop’s design and comfort make it suitable for continuous 24/7 wear, enhancing recovery data accuracy.

Personal Experience and Observations

  • The Whoop tends to provide stricter, less optimistic recovery and sleep assessments compared to Garmin’s body battery metric.
  • Resting heart rate trends from Whoop help gauge fitness and recovery phases accurately.
  • Garmin has been a reliable tool for five years, while Whoop has been used for about one year, mainly to improve sleep tracking.

Recommendations for Marathon Training

  • Garmin is essential for those focused on structured training and workout data.
  • Whoop is a valuable addition for those interested in optimizing recovery and sleep but is not necessary for effective marathon training.

Decisions

  • Choose Garmin for marathon training needs.
  • Use Whoop as an optional tool for enhanced recovery tracking.