After your warm down and your muscles are still warm

[Donna Creech]

After your warm down and your muscles are still warm so you should do some stretching. You do not want to do any strenuous stretch right after the long-term - you risk injury to the leg muscles. Therefore, approximately 15-20 minutes after your run is a good time to do any stretching.
You may also need to do some light massage. I love my "stick running" to do so. You can find these in most of the massage shops run or on Amazon. They are great Athletic Greens for those self-massage the muscles of the leg ulcer.
Long distances can lead to the legs still for a day or two. However, if you follow the tips mentioned above, it can certainly help you to recover faster. So, after those longer runs - get re-hydrated, go for a walk and stretch those muscles out. Your legs will thank you the next day when you head back from the door.

http://www.musclestacks.org/athletic-greens