How do I set-up the Garmin Load Field?
Step 1: Check Your Apps & Firmware
Install/update the latest Garmin Connect app and OnTracx app.
Update your OnTracx sensor to the latest firmware.
Step 2: Install the OnTracx Data Field
Open Garmin Connect on your phone.
Tap More → Connect IQ Store.
Search OnTracx Load I Data Field.
Tap Install to add it to your Garmin watch.
Step 3: Connect the Sensor to Your Watch
Use the serial number (12 number digit) on the back of your sensor.
Two options:
Manually enter the serial in the Connect IQ app settings.
Or connect once directly—your watch will store that serial automatically.
ℹ️ After the first connection, your watch will always search for that sensor.
⚠️ Want to switch sensors? Remove the stored serial number in the settings first.
Step 4: Add the Data Field to a Running Profile
Press & hold UP on your watch → go to Settings.
Open Activities & Apps → choose your run type (Run, Trail, Treadmill…).
Select Data Screens → Add New → Custom Data → Field 1.
Go to Connect IQ Fields → choose OnTracx.
Move OnTracx to the top position.
🔁 Repeat for each running profile you use.
ℹ️ These steps can differ from watch to watch. If needed, we advise you to check the settings of your Garmin Watch.
Step 5: Optimize Data Recording
Go to Settings → System → Data Recording.
Set frequency to Every Second for best accuracy.
Going for a run with the Garmin Load Field
Step 1: Before you start
Disconnect the sensor from the OnTracx app and fully close the app. The sensor cannot connect to your watch and phone at the same time.
Activate the OnTracx sensor by pressing the two buttons together until the LED is steady.
Attach the sensor to your OnTracx mount and strap.
Step 2: Start your run and verify connection
Open the Run activity on your Garmin watch.
Press START (top right) to begin.
The OnTracx data field will show it’s connecting (e.g., “Searching…”).
Once connected, the data field will display “POWER_ON”.
Press START again to start recording.
Step 3: Finish your run
Press STOP (top right) to finish.
Select Save to store the run on your watch.
Step 4: Sync your run to OnTracx (required)
Exit the running mode on Garmin (otherwise the sensor can’t reconnect).
Confirm the sensor is still in POWER ON mode (LED steady).
Open the OnTracx app → Connect Sensor → select your device.
Your data will sync automatically to your OnTracx dashboard and Garmin activity.