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Your new favorite workout partner

Forerunner 45 is the GPS running watch with all the activity-tracking features you need in a sleek, lightweight smartwatch that you’ll want to wear all day and night.

Product details

  1. Wrist-based heart rate tracking
  2. GPS capability to track pace, distance, intervals, and more
  3. Works with Garmin Coach training plans for expert, personalized coaching
  4. Smartphone connectivity includes live tracking and music playback control
  5. Safety and tracking features
  6. Sports apps for running, cycling, indoor track, cardio, and more
  7. Battery life up to 7 days in smartwatch mode, 13 hours in GPS mode

More options


Model Forerunner 45
Battery 1450Li-Ion
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.
Weights are based off Trek pre-production products at time of publication. Weights may vary in final production.

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