This is a forum dedicated to firearms. Not fitness or evasion techniques. Go back to the gym if you want to fish for compliments. Or move over to the activism forum and rally your statesmen to change your unconstitutional laws (assuming your in the US).
S&T is actually dedicated to the "software" portion of living life safely, training correctly, and being prepared. Fitness is very much a part of all three.
I don't view running as a tactic all its own, but I think it is important as part of a larger regiment for fitness. After coming home from Iraq and spending 4 years in college, I've spent a lot of this deployment getting both intentional and incidental exercise to get back in shape. When I have time to do the exercise I want, I try for a little bit of everything. If I only get to do one thing, it's a run. Cardio is a stress reliever of sorts for me, but since I hit the ground here last fall I've lost 25 pounds and can go for quite a while under weight without even breaking a sweat. While weight training has helped with being able to bear gear, I credit the running for the endurance I've gained.
In the end, it's a balance. I want my guys to be able to keep up, fight armed and unarmed, pull a larger person out of a burning vehicle, and run at a full sprint to back up a buddy in a fight if it's called for; all while wearing 60-120 pounds of gear.
Civilian side, I understand that not everyone is able to be in good shape due to medical issues, age, etc. However, you can't deny the benefits of being in shape. Speaking in terms of tactics, the person with a high level of fitness has more options at his disposal (and, IMO more of a chance for success) than someone who is overweight, lacks strength, and is easily winded.