When comparing walking to running in terms of cardiovascular benefits, both exercises offer significant advantages but differ in intensity and impact. Walking is a lower-impact exercise that can be done by most individuals, helping improve heart health and endurance while minimizing injury risk. Conversely, running provides a higher intensity workout that can lead to faster cardiovascular improvements and increased calorie burn in less time. Ultimately, both activities can effectively enhance cardiovascular health, and the choice between them may depend on personal preference, fitness level, and goals.