| Garmin Forerunner 55 | Garmin Forerunner 45S | Garmin Forerunner 45 | Garmin Forerunner 245 | |
| Customer Reviews | 4.6 out of 5 stars 5,412 | 4.6 out of 5 stars 14,190 | 4.6 out of 5 stars 14,190 | 4.7 out of 5 stars 8,687 |
| Daily Suggested Workouts | ✔ | ✘ | ✘ | ✔ |
| PacePro | ✔ | ✘ | ✘ | ✔ |
| Recovery Time | ✔ | ✘ | ✘ | ✔ |
| Race Predictor | ✔ | ✘ | ✘ | ✔ |
| Built in GPS | ✔ | ✔ | ✔ | ✔ |
| Advanced Sleep Monitoring | Yes – In App | Yes – In App | Yes – In App | Yes |
| Body Battery | ✔ | ✔ | ✔ | ✔ |
| Intensity Minutes (Improved) | ✔ | ✘ | ✘ | ✔ |
| Connect IQ Store | Yes | Watch faces only | Watch faces only | Yes |
| Wrist Based Heart Rate | ✔ | ✔ | ✔ | ✔ |