This is one of my favorite exercises to practice.  Have a friend hold your dog as you run away.  When you get a good distance away, call your dog.  Your dog will likely fly to find you since he will be frustrated at not being able to go with you when you were initially running away.  You can then reward your dog for his super fast recall! (I love that my little one is always the first one there :))

Here is another video that I posted awhile ago of the same exercise.  Only in this video, my friend actually walked him away, same concept though.  By making him move away from me, we were building a ton of drive to get him to want to turn and hurry right back to me!

A dog training secret is that after the recall, if possible, always release right back into the environment!  This keeps the recall nice and strong.  My dogs don't mind coming to me because they know they are going to get something awesome (treat, toy, playtime), and then they are going to get to go right back to what they were doing.

Happy recalling!