My approach to stopping was to use what I called "delaying tactics". My first cig of the day was with my 10am coffee, so I would go to the canteen and get my coffee, but take it back to my desk in the non-smoking office, telling myself that if I still REALLY wanted one when I had finished my coffee, I would go back to the smoking room. Usually, by that time the craving had passed. When the next craving came on, I would tell myself that if I still wanted one in half an hour, I would have one. This went on all day - it was the one after my evening meal that was the last to go.
You could try something similar - go for a run, and if you still feel like a cig when you return, then you can have one......but if you do still want one, tell yourself that you can wait till you have showered.......but then you will be nice and fresh, so you don't want to get all smelly again, so wait until after you have eaten.......oh, you can last half an hour more.....and so on.
There's nothing to stop you running after smoking, in fact it might help clear the smoke out of your lungs. Try a run having just smoked, and next time don't smoke before you go. The difference may encourage you to stop!
Others on the forum have used patches, gum, hypnosis etc. Try them all if you need to. Stopping smoking is the best thing you will ever do for yourself. Starting running is the second best.