I also like to walk around a local park, Spring Lake. The trail is paved and is a little over three miles. It is mostly shaded, so even in the summer, it is a comfortable walk.
Every once in a while I will use the gym treadmill to walk. Sometimes I just feel so tired that walking seems like it is the only thing I can do. Other times, if my back is acting up, a walk feels the best. But walking on the treadmill is really boring, I really prefer to be outside when walking.
I wish I could walk twice a day for 30 minutes in addition to my normal work out routine. But I just don't have that much time in a day...or do I?