How can you use daily walks for spiritual growth in Diamond Way Buddhism?

For a variety of reasons, my daily routine will include two one-hour walks per day during the coming couple of months (one in the morning, one in the evening). I want to use that time for my spiritual growth. In some branches of Buddhism (Zen) there is a walking meditation. I'm practicing Diamond Way Buddhism and I'm wondering if there are any exercises in that tradition I could do while I'm doing those 2 walks per day.