You're asking and I'm answering . . .
I suffer from intermittent incontinence while running. It doesn't happen on every run, and it almost always happens at the end of my jog when I slow down to walk and cool down. What can I do to avoid this? I try to pee at least twice before heading out for a run and don't drink anything before I run (I generally run first thing in the morning, right after I eat). I am a bit overweight, which I thought might be part of the problem, but that's part of the reason I'm running. Seems a vicious circle. Any tips or tricks would be appreciated.
— Running and Going
This problem is more common than you might think, and it is unsurprisingly much more common in women than in men. To see how you can avoid it and work around this problem,
The medical term for leaking urine while running, jumping, or coughing is stress incontinence. You are right that being overweight, along with childbirth, aging and smoking put women at risk for this problem. Losing weight will definitely help lessen the problem, as will strengthening your pelvic floor. These are the muscles that support your bladder. The FitSugar Health Guide has an in depth description of how to do Kegel exercises. After teaching Pilates for years, I have learned that strengthening your core will help as well. The more your torso can support itself, the less pressure it will exert on your bladder and pelvic floor.
Many female runners and athletes experience this kind of leakage, and the forum at Runner's World is full of advice on this topic. The most practical being to wear dark shorts, since the dark color is less apt to show any sign of the problem. The second piece of helpful advice is to wear a thin pad or panty liner. Staying away from caffeine might help too.
I sure do hope this helps and that you keep running!