Garmin's GPS pages say the most common reason for slow acquisition is an obstructed sky: move to an open area away from tall buildings, dense tree cover and overhead cover; normal cloud cover does not matter. Keep satellite data current by syncing with Garmin Connect or Garmin Express and installing updates. Allow extra time if you have traveled more than 100 miles since the last GPS use, not synced or acquired GPS for over two weeks, or recently reset the watch.
Restart if needed. For accuracy, Garmin explains GPS drift: under clear sky a device records position within about 3 meters, and canyons, tall buildings, dense trees, tunnels and indoors weaken the signal. To improve accuracy, do a GPS soak by waiting for more satellites before starting, enable Auto Pause, use Every Second recording, enable 3D speed and distance when climbing, enable additional satellite systems, and use an external speed sensor or compatible HRM in poor coverage. Indoor profiles disable GPS by default.
Differential
Likely causes of “Garmin watches GPS distance or route is inaccurate”, and how to tell them apart
- 1
An obstructed sky view
What separates it GPS takes minutes to lock or the track wanders
How to confirm Move to an open area and wait for the lock
- 2
Outdated satellite data
What separates it There is slow acquisition after a long gap because of outdated satellite data
How to confirm Sync with Garmin Connect or Garmin Express, to update the satellite data
- 3
Urban canyons or dense trees
What separates it The route jumps between buildings because of urban canyons or dense trees
How to confirm Enable extra satellite systems and expect some drift
- 4
An indoor profile
What separates it There is no distance or track because an indoor profile was used
How to confirm Use an outdoor profile or a sensor, and start again
- 5
Recording while stopped
What separates it Extra distance is added because the watch is recording while stopped
How to confirm Enable Auto Pause, so that recording stops when you stop
Before you touch a setting
Record this first — changing settings destroys the evidence
- The activity profile and where it happened
- How long it took to find GPS and whether you moved far or reset recently
- Whether Auto Pause, every second recording and extra satellites are on
Try in this order
0 of 7 completedGo outside to open sky
ReversibleGo outside to open sky, by moving away from buildings, trees and overhead cover, and then test again to see whether it helped.
Sync the watch
ReversibleSync the watch, by syncing with Garmin Connect or Garmin Express to update satellite data.
Wait for the lock
ReversibleLet it sit for a moment after GPS is ready so it can add satellites.
Enable Auto Pause
ReversibleEnable Auto Pause, so that the watch stops recording while you are stopped, and then test again to see whether it helped.
Use Every Second recording
ReversibleUse Every Second recording, by switching from Smart Recording for a more detailed track, and then test again to see whether it helped.
Enable extra satellites
ReversibleEnable extra satellites, by turning on GLONASS or Galileo where the watch offers it, and then test again to see whether it helped.
Restart and update
ReversibleRestart and update, by restarting the watch and installing updates with Garmin Express, and then test again to see whether it helped.
Model-specific
What is true of this model and not of its siblings
- Extra satellite systems
- Garmin's accuracy article says many Garmin devices support additional satellite systems; the list for your model is in the GPS settings and owner's manual.
- Water and temperature
- The fēnix 8 is rated 10 ATM with a 4 ATM dive rating and operates from minus 20 to 45 degrees Celsius, per Garmin's manual.
- Repair cost
- GPS settings cost nothing. A watch that never finds GPS after updates and a restart is hardware: Joe's Gaming and Electronics charges a $50 diagnostic fee if you decline a quote, and WalkingSolar quotes about $50 to $80 for a Garmin battery replacement.
- Other models this page answers
- These steps also fit models epix Pro (Gen 2), Forerunner 965, Forerunner 265, Venu 3/3S, vívoactive 5, Instinct 2X Solar, S70.
Stop boundary
When this stops being a self-service repair
- !If GPS never locks in an open field after a sync, update and restart, contact Garmin Support
- !If only the distance is off, adjust the recording settings first
- !If the route is bad only under trees or in the city, that is signal, not a fault
Evidence ledger
Sources behind this answer
Open sky, sync, extra time cases and restart.
GPS drift, environmental factors, soak, Auto Pause, every second recording, 3D speed and external sensors.
Updating software.
10 ATM water rating and operating temperature range.
The company and its wearables line.
Exact questions
Common questions
Why does GPS take so long?+
An obstructed sky, old satellite data or a long gap since last use, per Garmin.
How accurate is GPS?+
Garmin says about 3 meters under clear sky, with drift in some conditions.
What is a GPS soak?+
Waiting after GPS is ready so the watch connects to more satellites before you start.
Does cloud cover matter?+
Garmin says normal cloud cover does not affect acquisition.
Why is distance added when I stop?+
GPS drift while recording adds distance; Auto Pause prevents it.
Should I use Every Second recording?+
For the most accurate track, yes; it uses more memory and battery.
Do extra satellites help?+
Garmin says additional satellite systems can improve performance in difficult conditions.
Why is indoor distance missing?+
Indoor profiles disable GPS by default; use a sensor.
Does the watch need a sync?+
Syncing updates satellite data, which speeds acquisition.