Your last run showed a solid effort, covering 3.2km with an average heart rate of 157 bpm. While that pace and duration are good, remember your upcoming 'Base Volume' run is designed to build foundational aerobic capacity, which means consciously keeping your heart rate *below* 155 bpm.
Connecting these, your primary focus for the next session will be actively slowing your pace to ensure you stay within that easy aerobic zone, which is crucial for long-term endurance development and recovery.