I have a vague desire to do a half marathon year end. I would at least like to do it without being a disgrace to myself. I think it is ambitious for someone who has done only 1 10k race outdoors in her life, and stays in the comfort of an air conditioned gym the rest of the time.

Ambitious but no less achievable. I have 10 months to prepare. To motivate myself I got this pair of NB shoes with cushion like pillows hoping to reduce impact on my 30s joints. Currently things are going slow. :-p

I am doing the treadmill max twice a week and cannot run longer than 6km before sharp uncomfortable sensations (read: pain) hit my knees. That is if shin splints don't come first. I have start slow @ 8km /hr. If at 2.4 km there are no signs of shin fatigue, it means I can probably go on.

But I can definitely dance and jump about non-stop for 2 hours, which hopefully means I may last 2 hours of running. So far this case hasn't been proven.