My husband and I are trying to get in better shape in 2013, and we've always wanted to run a race. There's a huge 1/2 marathon in our city in 17 weeks. Neither of us can even run a mile right now, but I've done Couch to 5K in the past and enjoyed it, and I thought we could do Couch to 10K in 14 weeks, and walk/run the 1/2 marathon (21K) to the best of our ability.

Any of you ran or walk/ran a 1/2 marathon or another race? Any words of advice or encouragement?