10 Months is plenty of time to train for a half!! Last year I trained for my first half marathon, started the first week of January and the race was the first weekend in April. My plan allowed me to slowly increase the mileage and I was completely ready for the race. There are a lot of plans out there ranging from 12 to 18 weeks, I've not seen too many more than that. It would be great if you slowly work your way up, after your 4.2 mile run you should sign up for a 10k (6.2 miles). Once you complete that you will be ready to start a training plan for a half marathon and be all set to run it 3 months later (or sooner!).

Good luck!!

Keren,

You can do it if you get a good plan, stick to it and take care of your body.  In the last year I went from not being able to run 30 minutes without stopping to running a half-marathon in less than 2 hours (still not fast).  While I have been a runner for a long time, I'm also old(er) and big (a Clydesdale).

Halhigdon.com, runnersworld.com and this site (active.com) all have good half-marathon training programs that you should look at.

Remember to LISTEN to your body and take time off from running -- and cross train -- if your legs are hurting.

Good luck!

Surfing Vol

You can totally do it!  I started training in Jan 2010 and ran my first half in mid-September.  I wasn't fast, but I finished and then I ran another one in November because I enjoyed the first one so much.  I plan to run 3 more this year.  Watch out...they are addictive!