Review your goals:

Anything you do should always be motivated by a greater purpose. Maybe one of the reasons why you are finding running boring is that you have lost touch of the purpose for which you started so why not take a look at those reasons again.

Get a buddy:

If you really want to spice things up with your running, get a friend or a workout partner or trainer to run with you. You must definitely will enjoy reinforcement that is on the same wavelength as you.

Pick a battle:

Sometimes, when you run, you do so because you are training for a marathon race of some kind. Maybe instead of just running, tailor your running to accomplishing a set goal for that specific race.

Pack on the speed:

At other times, all you need to do is amp up your speed. Simply speeding up or changing the routine while running will make things go a lot better and nicer. You find that you are excited by a greater challenge.