You can customize the options for automatically starting and stopping the rest timer for the Ultra Run activity.

Status

Enables automatically recording rest splits.

Rest Start

Automatically starts the rest timer when you stop running. You can use the Manual Only option to start the rest timer only when you press BACK.

Rest End

Sets the pace required to end a rest split.

Minimum Time

Sets the amount of time before a rest split starts or ends.

Lap Key

Sets the BACK button to record a lap and start the rest timer, start the rest timer only, or record a lap only.