On Sunday 5 September I will be entering a 10K running event, probably the Middlesex 10K in Victoria Park.
This will be my first running event, so I've put together a training schedule based on a few sources on the web. Whilst nine weeks preparation appears quite conservative—I have been running for about 5 weeks already—I will be in North America for about a month of that with an unpredictable schedule.
Below is what I'm currently shooting for. Units are in miles, a hyphen indicates a rest day and "cross" stands for cross-training. I haven't decided what I'm going to do for that yet although swimming is tempting.

Tasks for this week:
- Complete week 1
- Get actual running shoes
I would suggest swimming, really. The no-impact nature of it will put no additional strain on your body like running does. You'll feel a lot better after you do it than if you cycled or something else.
Max
I agree with Max with regards to swimming. Great cardio and overall strength without additional injury risk. And it's fun.
Ben
Any chance you could enter yourself in to a 5K or two somewhere along the line? I found timed 5Ks were an amazing way of getting in shape for an eventual 10K (and an even more eventual half and then full marathon) - in Brighton there's a free timed 5K every Saturday morning with over 200 participants of every age and fitness level you could imagine.
Simon Willison
— lamby
I hope you have a suitable montage sequence planned too. Good luck. :-)
Euan
Getting good running shoes is the most important thing to do if you like to run. Look for a shop specialized in running shoes where someone can suggest the best shoes based on your weight, your foot and your running posture. I bought wrong shoes and it's two months that I struggle to recover from a terrible tendinitis (I was able to run half a marathon at 5'20"/Km an now I'm back to 8K/11K a t 6'/Km)
Stefano Canepa
Of course, in case you attend DebConf10 in NYC, we can schedule something together along with other Debian runners....
ChristianPerrier
— lamby