Marking Laps by Distance
You can use the Auto Lap® feature to automatically mark a lap every 1 mi. or 1 km. This feature is helpful for comparing your performance over different parts of a run.
Select
> Settings > Activity Options > Laps > Auto Lap.
> Settings > Activity Options > Laps > Auto Lap.
Each time you complete a lap, a message appears that displays the time for that lap. The device also beeps or vibrates if audible tones are turned on (Setting the Device Sounds).
If necessary, you can customize the data screens in your Garmin Connect™ account to display additional lap data.